C.K Tools Vorteck HSS Cobalt Step Drill Bit 4-20 mm, 5% High-Speed Steel, Quick-Lock Hex Shank for Stainless Brass and Sheet Metal, Metal Deburring, Control Panels, HVAC, T3016

Drill enlarged deburring: designed for centring, drilling and deburring sheet metal in one operation, so less accessory changes are required during electrical installations and assembly work. 5% COBALT HSS: High speed steel with 5% cobalt supports reliable performance on hard materials such as stainless steel and brass when standard drill bits wear out quickly. QUICK-LOCK SHANK: The 1/4 inch quick-lock hex shank ensures a secure connection with compatible quick-change mounts and bit holders. Precise monoblock shape: One-piece precision ground for controlled drilling, clean hole enlargement and stable guidance in suitable thin plates. Tested dimensions: range 4-20 mm with 2 mm increments: 4, 6, 8, 10, 12, 14, 16, 18 and 20 mm. Product dimensions 79 x 20 x 20 mm, weight 49 g.