For machines that require 5" Pinned blades. Perfect for Sears Craftsman, Penn state, Delta, Ryobi, all 15" And 16" Imported scroll saws. Contains 6 each of 42401, 41101, & 41201. Blister carded assortment. 18 Pack contains 6 each of 42401, 41101, & 41201 for machines that require 5" Pinned blades Perfect for Sears Craftsman, Penn state, Delta, Ryobi, all 15" And 16" Imported scroll saws # 42401 - 0. 070 wide, 0. 010" Thick, 18. 5 TPI & cuts in wood, plastic and extremely thin cuts in material 3/32" To 1/2" Thick # 41101 - 0. 100 wide, 0. 018" Thick, 15 TPI & Wallboard, Pressed wood, wood, felt, paper, Bone, lead # 41201 - 0. 100 wide, 0. 018" Thick, 10 TPI & for hard/soft wood and plastic blister carded assortment.