Spiralcool
SpiralCool R425-5/8SB Smooth Bore Backing Pad 4-1/2 In x 5/8 In Medium 11000 RPM
$16.19
Medium-density 4-1/2 inch backing pad with a 5/8 inch smooth bore, rated to 11,000 RPM. The smooth bore fits hub-and-nut grinders, and the medium density balances flat and contour grinding with coated discs. Used by fabricators and metalworkers on disc abrasive setups in finishing work.