Shopsmith 12187 G2 Sandpaper Block Refill, Grit 3" X 5-1/4"

It works like it should.its the best sandpaper ive ever bought . I run a cabinet shop and have used about all the other brands and none compare to it.

The block is very easy to use, it really grabs the sandpaper and the sandpaper is great. I am only buying Shopsmith sandpaper now.