Reviews Used Engineering Machines

Thames & Kosmos Simple Machines Science Experiment & Model Building Kit, Introduction to Mechanical Physics, Build 26 Models to Investigate The 6 Classic Simple Machines

  • Through 26 model-building exercise, gain hands-on experience with gears and all six classic simple machines: wheels and axles, levers, pulleys, inclined Planes, screws, and wedges..
  • Durable, modular construction system is compatible with building pieces in other construction, physics, and engineering kits from Thames & Kosmos..
  • Learn how simple machines are all around us (the flagpole at school, the wheelbarrow in your backyard, The seesaw at the playground!) and how they’re used to make complex tasks easier to do..
  • Includes a specially designed spring scale so that you can measure how the machines change the direction and magnitude of forces..
  • A 32-page, full-color illustrated manual guides model building with step-by-step instructions and provides fun, engaging scientific information..
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Mini Food Grade Brushless Water Pump Waterproof Submersible Water Pump Pond Pump 12V DC 5W for Fish Tank Water Feature Aquarium Fountain Medical Instruments

  • ★High quality:This water pump adopts food grade material, healthy for water drinking and no threat of electric shock. The brushless water pump uses food grade materials for healthy drinking water without the threat of electric shock. High quality engineering plastic materials are manufactured, durable, stable in operation during work. With steady speed control circuit technology, the flow is very stable..
  • ★Energy saving: Low power consumption, its power is only 5W, helps save electricity. Energy-saving with low noise and long service life, eco-friendly and energy-saving. It can be used for drinking fountain, juicer, small fish pond, solar system and so on..
  • ★Widely use: Widely used for aquarium, fountain, small fish pond, solar system, radiators, water circulation system, medical equipment, Juice, coffee machines, beverage machines, filling machines, water dispenser and so on.etc.
  • ★Easy to install: Compact size, Can be installed in the inside/outside of the water. And the pump is perfect for the family home thermal solar systems or any circulation pump application.For indoor and outdoor use, sustain heave duty work for 24 hours..
  • ★humanized design: Compact sizeLightweight and compact design, easy and convenient to install.The pump humanized des....
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SmartLab Toys TINY Robots with 15 Ingenious Motorized Builds Big Science Tiny Tools.

  • Tiny robots, big science fun: Mini robotics kit with everything kids need to design and build miniature working machines from an assortment of real....
  • Hands-on STEAM learning: Exciting intro to mini machines and robotics.
  • experiment with gears, axles, movement, and balance.
  • 15 suggested builds, endless possibilities: While a child’s imagination is the only limit, an enormous foldout engineering manual gives instructions....
  • 26 pieces + batteries included: 3-piece chassis, 2-piece head, 5 gears, 3 axles, 5 wheels, 2 arms with grippers, 2 elbows, 2 legs, center roller,....
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Bettomshin 1Pcs B1816 Needle Roller Bearings 1-1/8\x1-3/8\x1\ Bearing Steel P0 Stamped Outer Ring Needle Bearings Cageless

  • Size: 1-1/8"x1-3/8"x1"(Bore Diameter x Outside Diameter x Thickness).
  • The needle roller bearing has a compact radial structure and a small outer diameter, which is especially suitable for supporting structures with restricted radial installation dimensions.
  • The rollers for heat tolerance and durability under heavy loads.
  • cage guides and evenly spaced rollers for reduced friction, vibration, and noise.
  • Needle roller bearings are widely used in power tools, textile machinery, agricultural machinery, industrial sewing machines, and engineering machinery.
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3Pcs Magnetic Small Bubble Levels 52x20x15mm Three Line High Precision Square Spirit Level Measuring Tools for Leveling Trailer, RV, Machine, Picture Hanging, Magnetism

  • Three line design, high precision measurement instrument tool. Magnetic small bubble levels 52x20x15mm three line high precision square spirit level measuring tools for leveling trailer, rv, machine, picture hanging etc..
  • Magnetism on the backing, Magnetic function. Magnetic bubble level with magnet on the bottom can absorbed onto the iron- or steel-surface for leveling measuring..
  • 52mm square bubble level used to level measurements in building, landscaping, fencing, surveying, building trades, engineering..
  • Square Bubble Level 52mmx20mmx15mm spirit level three line high precision degree mark surface level bubble for measuring instrument..
  • The square level can be used to level any surface, ideal for leveling metalworking, equipment, appliances, washing machines, home furnishing etc..
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Klutz Lego Gear Bots Science/STEM Activity Kit

  • Build 8 physics-driven kinetic creatures using LEGO Technic bricks and papercraft..
  • STEM content about axles, cams, cranks, engineering in everyday machines is included in the 64-page book, alongside the step-by-step instructions..
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KLUTZ Nail Charms Toy

  • Build 8 physics-driven kinetic creatures using LEGO Technic bricks and papercraft..
  • STEM content about axles, cams, cranks, engineering in everyday machines is included in the 64-page book, alongside the step-by-step instructions..
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Malware, Rootkits & Botnets A Beginner's Guide

  • Build 8 physics-driven kinetic creatures using LEGO Technic bricks and papercraft..
  • STEM content about axles, cams, cranks, engineering in everyday machines is included in the 64-page book, alongside the step-by-step instructions..
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Heavy Duty Crocodile Clamp Pure Copper 100A/800A/1500A Car Battery Charger Clamps Power Replacement Battery Alligator Clips Jumper Cables Clamp Welding machine clamp（100-500A）

  • The jumper clip is made of pure copper with good conductivity, with an insulated handle, which is easy to use..
  • This is ideal for applications running on battery chargers (solar panels, electric fences, etc.) or car batteries (camping, boats, electric fences,....
  • Powerful alligator clip connectors are widely used in various electrical engineering, electric welding machines, voltage testers, and are suitable for....
  • Pack of 2 fits 100-500A Powerful car battery charger clip connector (1 red + 1 black).
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Discovery #MINDBLOWN Electricity Construction Set 10 Robotic Build Kits & 7 Electronic Circuit Experiments STEM Learning Toys for Boys Girls Kids and Teens

  • ✔BUILD REAL WORKING MACHINES: 10 unique build kits allow kids to explore the excitement of engineering by creating working machines that they see in....
  • ✔DISCOVER ELECTRICITY: Use the 7 different electronic experiments to understand circuitry. These kits are designed to educate about electricity in a....
  • ✔239 PIECES FOR TOTAL CUSTOMIZATION: 17 robot blueprints are included, but children are free to create their own original robots from their....
  • ✔ EDUCATIONAL AND ENGAGING STEM TOY: Enrich your child’s mind with the interactive challenges of building their own robots! The detailed....
  • ✔PERFECT GIFT FOR DEVELOPING MINDS: Boys and girls ages 8 and up will love engaging their minds and building a robot from scratch. The blueprints....
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Buttock Vacuum Cups,210ML XXL Therapy Vacuum Cupping Machine Accessories 9.4 Inch Diameter Butt Suction Cups with Y Type Hose for Buttock Lift,Body Massage (White-1 Pair )

  • WHITE BUTT VACUUM CUPS: Capacity is 210 ml.
  • Diameter is 9.4 inch.With the curved design,fit your butt comfortably..
  • PREMIUM MATERIAL:Our butt vacuum cups are made of PC engineering plastics,good toughness,high transparency and strong impact resistance,sturdy and durable..
  • COMPATIBLE:This pair of butt vacuum cups come with a Y-shaped hose,the length is 85 inch and the inner diameter of the vacuum tube opening is 0.2 inch,which can be used with many kind of Vacuum Cupping Machines..
  • PREFECT FOR BUTT LIFT:The suction pressure provided by vacuum cupping therapy set can move fat cells from other areas of the body into the butt tissue, which is used to improve buttock size and body shape quickly..
  • EFFECTIVE FOR ALL AGES: Shaping body through vacuum cupping cups is very effective for women of all ages, especially for women who are 25-45 years old..
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M10 Thread Count 1.5mm Ring Shape Lifting Eye Nut 304 Stainless Steel Threaded Nut Fastener 5 Pack Ring Shape Threaded Nuts

  • Product advantages: 304 stainless steel hook screw, durable, high hardness, rust-proof rust. Exquisitely made of super-large machines, after many experiments proved that in the outdoors will not be oxidized, rust, 1.3 times greater than the ordinary steel pull..
  • It is forbidden to rub between the bolts and it is easy to damage the threads..
  • Application: Widely used in a variety of engineering lifting machinery, metallurgical and mining equipment, port railway handling, forestry machinery, electrical equipment, aviation and sea, land transport, factories and mines enterprises lifting, traction and other industries..
  • Commitment: Our products are of excellent quality and dare to promise any quality problems. We provide 100% no reason refund service. Email 24-hour customer service.
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M12 x 80mm Ring Lifting Expansion Eyebolt Bolt Screw with 304 Stainless Steel Anchor Bolt

  • ...e, rust resistance and high hardness, which provides a longer service life, can be used indoor and outdoor, even in humid environment..
  • [APPLICATION]: Expansion eyebolts are suitable for fastening items to concrete, bricks and walls, they are widely used for hanging heavy objects, fixing wire ropes, home decoration, engineering installation, etc..
  • [HOW TO USE]: 1. Select a bit with the same diameter as the expansion screw casing, install it on the electric drill and dirll a proper hole.
  • 2. Insert the expansion bolt into the hole, tighten the nut with a wrench and then tighten the lifting ring..
  • [PRECAUTIONS]: 1. When using percussion drills to punch holes, they must be punched vertically, and the hole diameter cannot be too large, otherwise the tightness will be affected. 2. When it is installed upside down on the roof, it must be installed on a solid material. It is not suitable to install overweight objects, nor can it install machines with large vibrations, because there is a risk of falling due to vibration and overweight..
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