Kobalt 21 Piece Assorted Titanium Twist Drill Bit Set Secure Mail Storage ergonomic design conforms to and ergonomic design conforms to and supports your body as you stretch out and enjoy a deep It features a roller head with triple functions: a material stop Brand Model Compatibility N A Type Jobber length Bit Length Set Shank Size 1 4 in Shank Type Hex Right Left Hand Right handed Tip Geometry 135 degree split point Heavy Duty Yes Material Titanium Package Quantity 21 For Use on Fiberglass Yes For Use on Metal Yes For Use on PVC Yes For Use on Stainless Steel No For Use on Wood Yes Set Individual Set Warranty None CA Residents: Prop 65 Warning(s) Yes Bit Diameter (Inches) Assorted Maximum Drilling Depth 3 in Titanium coating increases drilling speeds and extends tool life Split point penetrates surface on contact preventing drill bit walking (1 8 in and larger) 1 4 In hex shank stops drill spin out Quick change connector loads all hex shank accessories including 1 in insert bit