This is the new upgrade one way pulley 60T with dual-radial-bearing support to have better auto rotation.

2 x Brass Bushing.
2 x Radial Bearings 10x15x4mm.
1 x One Way Bearing 10x14x12mm.
1 x Aluminum Pulley 60T.

To be used on

Goblin 630 helicopters
Goblin 700 helicopters