All gears are connected and spin simultaneously.

All gears are able to spin simultaneously.

Consists of 6 gears.In nature state, the gears are locked each other. When push a pair of buttons (in opposite pair), then two gears get detached a...

This is a gravity toy.1. Add some sand at the bottom half ball through the holes. The sand won't come out due to the inverse funnel effect.2. Inser...

Total 48 conical gears, when turn any one all others follow.

Single link. square cross section.

Yes! This pot's mouse is hollowed.

All gears are connected and spin simultaneously.

Total 48 conical gears, when turn any one all others follow.

12 interlocked gears.

6 wheels were connected by gears and all spin in the same time.