This size #22, 1" no dent nail has nail shank of 0.083" thick. Sold with rust resistant shells. The no dent nails are hardened, tempered steel used for driving into wood. The buttons are driven through fabric and foam directly into wood frame. They have small corrugations to allow for easy driving and help prevent buttons from pulling out. This item is sold in a 1 gross box (144 pcs. of each item).