Sia Abrasives double-sided sanding block is a great tool when you are needing to sand by hand. Use the hard side for sanding flat boards or panels, and the soft side for sanding contours and in the finishing process.
Both sides of the block are hook and loop (velcro) to be used with Siafast sheet #1960
Block size- 2-3/4" wide x 5" long x 1-1/2" thick.