Flexible Coupling Sets - Connects a single motor to a lead screw end (Two Hubs and One Middle Spider)

Flexible Coupling Sets - Connects a single motor to a lead screw end (Two Hubs and One Middle Spider) We have an assortment of bores (shaft diameters) from which to choose. How to choose, the first measurement is one side and the second measurement is the opposite side, pretty simple. Say you have a 1/4" motor shaft, and the lead screw is 5/8", you will need a 1/4" to 5/8" coupling. Each coupling comes in three parts, two hubs and one insert.