Hub is used with color-coded extra
hard, hard, medium, and soft
backup plates. 2 1/2 inch diameter
hub can be used with 4 1/2 inch, 5
inch, and 7 inch face plates. Use
with Grit-Lok Fibre Discs. Adaptors
available for M10-1.25,M10-1.50,3/8
in-24 shafts.
