$197.97 (as of 10/12/2018 16:13 PST details )
Features:
- EXCITING amp EDUCATIONAL , This amazing design is not only fun but very educational! Hours of learning and fun! Perfect gift for a science minded adult amp kid and also the hit of their birthday party and totally engaging for all ages.
- COOL GADGETS If you have an interest in gadgets, a little patience, and don t get easily frustrated, this thing can provide a good bit of entertainment.
- A VERY ATTRACTIVE DISPLAY ITEM with superb craftsmanship, fine grinding and perfect spraying. The cylinder is made of quartz tube material, the power cylinder and the power piston are all made of suj alloy steel. The base, bracket, flywheel
- Can be used without over commissioning the key part is commonly used metal fine coating material, it is not worn for a long time, the cylinder is made of CNC, the life is more than 20 years, the product is safe and environmentally friendly
- The inner diameter of the power cylinder is 19mm, the piston stroke is 16mm, the piston diameter is 16mm, the flywheel diameter is 54mm, the pulley diameter is 24mm, the power generation voltage is 4 9v, and the matching colorful LED can be driven to form a pleasing operation effect. The product has an extra set of out of band wiring. Motor can be used together.