Servocity - 90° Clamping Tube Hub provides a great way to attach a 5/8” diameter tube or shaft to a ½" diameter hub. These clamping hubs have a 5/8" diameter bore for shaft connection, a ½" diameter bore for hub connection, four 6-32 tapped holes, four 6-32 through holes, two 6-32 machine screw for tightening,
and utilizes the 0.77" hub pattern.