These hubs will typically be used on motors with 3/8" shafts. Note: To create a complete coupling set, you will need two hubs (one for the motor shaft and one for the lead screw end) and you will need one spider. These items are only offered to allow for any configurations that is not offered for rigid couplings. This set will mate with the 1/4" Bore Large L070 series coupling hub and the large hub spider.
