100PCS 3mm x 1mm N35 Rare Earth Neodymium Super Strong Magnets; Description: Name: Magnets; Qty: 100PCS OF MAGNETS ONLY; Type: Neodymium; Diameter: 3mm(±0.1mm); Height: 1mm(±0.1mm); Grade: N35; Recommend Age:8+; Notice: DO NOT  EAT. NOT for young children. Package Included: 100 x  Neodymium Rare Earth Magnet 

Description: Name: Magnets; Qty: 100PCS OF MAGNETS ONLY; Type: Neodymium; Diameter: 2mm; Height: 1mm; Grade: N40; Package Included: 100 x  Neodymium Rare Earth Magnet  

Description: Product Name: Stirling Engine Model;  Size: 16.5x9x98cm/6.49”x3.54”x3.85”;  Flywheel Diameter: 60mm/2.36”;  Drive Wheel Diameter: 25mm/0.98”;  Cylinder inner diameter: 16mm/0.62”;  Color: Silver;  Material: Aluminum Alloy + Zinc Alloy + Pyrex Glass;  Voltage: 3-5V;    Usage: 1.Placed the Stirling engine in a horizontal position, use your...

Description: Product Name: Stirling Engine Model;  Color: As shown on the picture.  Material: Metal,Glass;    Usage: 1. Security start step;  (1) Put the engine model in a horizontal position.  (2) Turn the flywheel gently with the hand, check whether the flywheel is running smoothly...

Features: 1. Using hall sensor, transparent visual structure.  2. Multi-coil design, stronger magnetic field, higher speed.  3. Laser-cutting acrylic material, no burrs, beautiful cruved lines.  Creative gifts, technological gifts, principle teaching models, fashion desktop decorations.  4. Comes with USB transmission cable which contains the...

Features: 1. Install the discharge needle and screw it on the fixing hole.  2. Connect the power supply to the host.  3. Insert the plug into the socket. Use a playback device that supports Bluetooth to search for "HW-Audo" and connect. After the connection...

Mini Electromotor Model Equipment Student Physical Experiment.  Description: Item Name: Mini Electromotor Model;  Weight: Approx.200g;  Size: 130*95*55mm(L*W*H);  Usage: To study mechanics, electricity and magnetism.    Package: 1 × Mini Electromotor Model (NOT Including batteries);  1 × Instruction

This is a real solar magnetic levitation motor model, pure handmade. Can save energy in incandescent sunlight,Yuba lights,Tungsten lamp,Spotlight etc High-power light source irradiation,rotating in the suspended state, the maximum can reach 2000 rpm is interesting, choose your gift, the practice of science, scientific...

Features: 1. Fast speed can reach 1500 revolutions per minute under the sun.  2. Long life span of at least 68 years.  3. No need to charge or plug in, only need sunlight to rotate.  4. The structure is simple and clear, and the...

Description: Size: 150*70*90mm;  Packing Size: 170*90*110mm;  Weight: 550g;  Colour: As the picture shows;    Note: Children should use the engine model under adult care.    Package included: 1*A set of Stirling Engine Model

Steam Engine P11 Reversible Control Valve Engine Parts.    Description: Item Name: P11 Reversible Control Valve;  Weight: 99g;  NO: P11;  Material: Metal Brass;  It consists of silver soldering process, Screw fitting is 1/4 "X 40 TPI.    Note: Replace the control valve on older engines...

Steam Engine P9 Displacement Oiler Lubricator Steam Engine Switch.    Description: Item name: Steam Engine Oiler;  Material: Metal Brass;  Length 43 mm;  Width 33 mm;  Diameter 14 mm;  Weight: 100g;  Screw fitting is 1/4" X 40 TPI;  This is a displacement oiler for a model...

Description: Item Name: Science Model Toy; Main Material: Stainless steel, Acrylic, LED; Power: Powered by USB; Size: 8*8*6cm; Option: 1/2/3 (Optional); Weight: Option 1:270g, Option 2: 1300g, Option 3: 1500g; Note: - Only selling reactor parts. Need to assemble. - The glue needs to...

Steam Turbine Engine Metal Brass Model Engine Parts.    Features: Speed of about 40,000 rpm / min.  Turbine wheel made of brass and aluminum.  Rotor made of brass, the diameter is 41 mm. Spindle stainless steel 6mm.  There are two stainless steel bearings.  The...

Feature: Portable design and easy to set up and maintenance. Plug Initiative safety protecion circuitry; Automatic protection system host,Safe and reliable to prevent overcharging; overload and short circuit protection; Solar panels charge time: about 8 hours fully charged (light); When the main body charging (red light),...

Description: Item Name: Full Metal Combustion Engines;  Weight: About 2kg;  Material: Aluminium Alloy;  Voltage: 6~10V;  Fuel: ZIPPOOIL or Gasoline;  The best tappet clearance: 0.5mm;  Age: Kids over 10 years old;     Packaga Included: 1 × Full Metal Combustion Engines

Features: 1.This engine can burn alcohol. The alcohol concentration is not high, and the lowest 58 degree liquor can be used, and no lubrication is needed. 2.Transparent combustion chamber, the internal situation can be seen clearly, the working process of the two-stroke internal combustion...

Features: This Low Temperature Stiring Engine could be a great gift for your friends or families.  It is almost ready to run: after the installation, put it on a cup of hot water, then it will run itself.    Low Temperature Stirling Engine.  Very...

Description: Item Name: Gatling 6 Cylinder Stirling Engine;  Material: Full Metal;  Engine Size: 259*142*172mm;  Package Size: 290*170*190mm;  Weight: About 1030g;    Package Included: 1 X 6 Cylinder Stirling Engine

Description: Size:(L*W*H) 17x12x22cm Piston Stroke 14mm;  Net Weight 720g Belt 5x5;  Flywheel Diameter 45mm Fuel Butane Gas;  Piston Diameter 12mm Material of Base  Wood;  Heating Cylinder Outer Diameter 14mm Material of Cylinder 304 Stainless Steel;  Propeller Diameter 123mm Material of Propeller  6061 Aluminum Alloy;  Belt Wheel...