3/4inch (19mm), 7/8inch (22mm), 1-1/8inch (29mm) 1-1/4inch (32mm), 1-1/2inch (38mm) 1-3/4inch (44mm), 2inch (51mm), 2-1/2inch (64mm) 3inch (76mm), 3-3/2inch (89mm) 4inch (102mm), 5inch (127mm) The hole saw is made of carbon steel, which has the advantages of high performance, durability. A black oxide finish-coating leaves a mild layer of corrosion and abrasion resistance. Holesaw kit in a convenient plastic storage box, and easy to install portable. Help you work easily. A carbon steel circular hole saw is used to make round holes in wooden workpieces and plastic parts. The tooth treatment makes the cutting smooth.