Neiko 10188A Titanium Step Drill Bit, 13/16" HSS,4241# Titanium Nitride Coated Size: 13/16",7/8",15/16",1", 1-1/16", 1-1/8", 1-3/16",1-1/4", 1-5/16",1-3/8" Shank: 1" x 3/8"