Used to transmit between motor and soft shaft axle.
The hole close to motor is 3.17mm.
The hole close to soft shaft axle is 4mm.
The motor side is roof-fixed.
The axle side is locked like drill collet chuck.
Weight: 7.49 g
Size: 1071 cm
1 ×3.17 to 4mm Soft Shaft Axle Small Plug Connector