Collet Type Prop Shaft Adapters for 4mm Shaft

 Collet type prop shaft adapters center themselves on a motor or gearbox prop shaft and hold securely as the collet squeezes the shaft.

Aluminum Collet Type Prop Shaft Adapters for 4mm Shaft Motor.
Prop shaft Diameter: 8.0mm.
Weight: 21g / 0.8oz