2 inch cutting depth, 3/4 inch weldon shank Annular cutter kit. Includes 6pcs Annular cutter and 2 pcs Pilot pins Optimal for steel and iron cutting. Extra information maybe required when cutting other materials, such as stainless steel and aluminum. Cutting diameter of each cutter: 7/16", 9/16", 11/16'', 13/16'', 15/16'', 1-1/16''; Pilot pin size: 1/4''x4'' Cuts holes in steel accurately, quickly & safely; Large holes can be drilled up to ten times faster than regular drills bits; Make overlapping holes, slotting holes and edge cuts; Made from tough, high-speed tool steel; Machine finish hole, no reaming needed when used with lubricant; American Standard(ANSI) High Speed Steel Slugger Cutter Set: 2" Cutting Depth, 7/16" - 1-1/16'', 8 Pcs/Set, Includes: 1 pc HSS Annular Cutter 7/16"x2"Depth(#2081-2012) 1 pc HSS Annular Cutter 9/16"x2"Depth(#2081-2014) 1 pc HSS Annular Cutter 11/16"x2"Depth(#2081-2016) 1 pc HSS Annular Cutter 13/16"x2"Depth(#2081-2018) 1 pc HSS Annular Cutter 15/16"x2"Depth(#2081-2020) 1 pc HSS Annular Cutter 1-1/16"x2"Depth(#2081-2022) 2pcs Pilot Pin Dia.1/4"x4"OAL(#0600-0090) Cuts holes in steel accurately, quickly & safely Large holes can be drilled up to ten times faster than regular drills bits Make overlapping holes, slotting holes and edge cuts Made from tough, high-speed tool steel Machine-finish hole-no reaming needed when used with lubricant American Standard