Expanding Rubber Wheel 90 x 100mm StealthMounts The 1/4" shaft burrs are

The 1/4" shaft burrs are used in flex shaft tools

while the smaller end fits over 4'' dust collection fittings

and with the help of our Router Table Box Joint Jig

bushings or bearings

Expanding Rubber Wheel 90 x 100mm StealthMounts The 1/4" shaft burrs areDesigned to fit on a double keyway mandrel, the rubber expanding drums offer a even level surface for sanding. The advantage of these drums over pneumatic drums are that there is no over or under inflation, which can cause uneven grinding on your material. The drum relies on centrifugal force to hold the sleeve in place, and since it is a solid rubber drum, you get even grinding across the entire surface.