8x1.25mm Outrunner Adapter Shaft - Tru-Turn Precision Model Products
Adapter Conversion Shaft Sleeve Change-over Shaft for 3.17mm Motor Shaft to 5mm | eBay
1231A Steel Shaft Adapter Bushings 5PK
D Shaft Adapter
Amazon.com: Flange Coupling Connector Motor Shaft Coupling D-Shaped Wheel Metal Shaft Coupler for Mecanum Wheel Motor Shaft Industrial Robot Parts : Everything Else
Cobra Bio Cell Driver Shaft Adapter
Knob Shaft-Adapter, 1,02 €
0.5 in. Hex and Keyed Shaft Coupling - AndyMark, Inc
6mm D shaft to Lego axis adapter free 3D model 3D printable | CGTrader