3M™ Disc Pad Face Plate Ribbed 28443, 4-1/2 in Extra Hard Red
Ribbed face plate results in a cooler running disc. Higher pressure on the ribbed sections prolongs disc life when dulling is a problem. Use with 4-1/2 in diameter x 7/8 in Fibre Discs. Use with 2-1/2 in Disc Pad Hub. Extra hard - red.