3M Stikit coated 426U sanding roll uses silicon carbide as the abrasive material. 3M incorporates this silicon carbide material into the sanding roll forming a grit of 100. The PSA attachment allows for easy mounting to the tool or pad. The sanding roll has a width of 4 1/2 in and length of 10 yd. This abrasive is on a paper backing, A weight.