"The MILWAUKEE® Universal Fit OPEN-LOK™ 3-1/2"" Triangle Sanding Pad & Paper 10 Piece Variety Pack is for Oscillating Multi-Tools. The 3-1/2"" Triangle Sanding Pad & Paper Variety Set utilizes hook and loop technology for fast and secure paper changes. The sanding pad uses a dense foam backer for flexibility and durability, delivering a longer pad life and a smooth sanding experience. This kit includes 60 grit, 120 grit, and 240 grit silicon carbide sandpaper, ideal for paint removal and wood sanding."