Brass Flexible Shaft Coupler Rigid Coupling Motor Connector CNC for RC Car Boat
Product Size: Outside Diameter 9 mm Length 20 mm 

Features

Guaranteed quality
Made of brass, tough and strong, can be used for a long time.

High concentricity
High concentricity and precision increase backlash-free transmission efficiency by
40% increase

Wrench + screws*4 included
Free 4 setscrews with one coupling One wrench for one order.

♥  Packaging includes
According to your choice