Steel Dragon Tools HSS Annular Cutter 7 PC Kit - 9/16" to 1-1/16" - with 1" Cut Depth, 3/4" Weldon Shank and Pilot Pin The SDT HSS annular cut 7-piece kit includes six (6) annular bits and one (1) pilot pin. Bit sizes included: 9/16 in., 11/16 in., 13/16 in., 15/16 in., 1 in., and 1-1/16 in. Bits have 1-inch cutting depth with a 3/4 in. Weldon shank. Includes carrying case. SDT annular cutters will drill large holes up to ten times faster than regular drills bits.