Rigid and semi-rigid sanding blocks you hold rather than mount. Diablo sanding sponge blocks in 4 x 2-1/2 and 8 x 3 in. suit flat work; ULTRAflex sponge blocks flex enough to follow a gentle curve; SandNet hand pads use the same open-mesh abrasive as the discs, so they shed dust instead of clogging. Most come as assorted-grit sets covering coarse through ultra fine in one package.
All four are Diablo: two sanding sponge blocks, an ULTRAflex block sanding sponge and a SandNet hand sanding pad.
