Milescraft 1622 – Sand-It Multi-Surface Sanding Block. Sand Flat, Concave, Convex & Round Surfaces or Fit into Tight Spaces. Accepts any ¼ Sheet of Sand Paper. 150 Grit Sand Paper Included

4 different sides to the Sand It for sanding: Concave, Flat, tight Corners and Convex surfaces
Uses and comes with one sheet of 1/4in thick sand paper
Sand paper dimensions 140mm x 114mm
Eliminates the need for multiple sanding tools
Quickly change between different grits of sand paper with the snap-lock design