Mount 2″ Discs on M30 OR M31 Mandrels. Home>Power Tool Accessories For Woodcarvers>Rotary Carving Tool Accessories>Scotch-Brite Bristle Discs>Mount 2″ Discs on M30 OR M31 Mandrels. Mount 2″ Discs on M30 OR M31 Mandrels. CA $5.09 – CA $9.46 Flat head screw type mandrels with 1/4″ shank for mounting 2″ Scotch-Brite Radial Bristle Discs. M30 Mandrel 1/4" Shank quantity M30 Mandrel 1/4" ShankCA $5.09 M31 Mandrel 1/4" Shank quantity M31 Mandrel 1/4" ShankCA $9.46 Add to cart Add to Wishlist Category: Scotch-Brite Bristle Discs Share000 Description Related products CA $37.17 View options 3M Radial Bristle Discs 2 inch Diameter 80grit Scotch-Brite Bristle Discs 3M Scotch-Brite Radial Bristle Disc, 2" dia, 3/8" arbor hole, 80 grit (yellow), Pack of 6. Use with mandrels M30 and M31 for mounting in handpieces. CA $37.17 CA $37.17 View options CA $15.94 Add to cart Set of 6 Bristle Discs 3/4" dia in 400 Grit Blue Scotch-Brite Bristle Discs CA $15.94 CA $15.94 Add to cart CA $15.94 View options 3M Radial Bristle Discs 34inch Diameter 80grit Scotch-Brite Bristle Discs 3M Scotch-Brite Radial Bristle Disc, 3/4" dia, 1/16" arbor hole, 80 grit (yellow), Pack of 6. Use with mandrels M1 and M6. CA $15.94 CA $15.94 View options CA $15.94 View options 3M Radial Bristle Discs 34inch Diameter 400grit. Scotch-Brite Bristle Discs 3M Scotch-Brite Radial Bristle Disc, 3/4" dia, 1/16" arbor hole, 400 grit (blue), Pack of 6. Use with mandrels M1 and M6. CA $15.94 CA $15.94 View options