The RYOBI Sanding/Grinding Guide allows users the ability to sand and grind at accurate 45 and 90 degree angles. Featuring adjustable depth control for accurate and precise finish, you now have the stability and support needed to complete any application. The guide is compatible with standard rotary tools and the kit includes (1) 45 Degree Platform Guide, (1) 90 Degree Platform Guide, (1) 1/2 in. sanding drum mandrel, (1) 1/2 in. 60 grit sanding band, (1) 1/2 in. 120 grit sanding band, (1) 1/2 in. 240 grit sanding band, and (1) 3/8 in. cylinder grinding stone.