C.K Tools Vorteck HSS Cobalt Step Drill Bit 4-12mm, 5% High Speed Steel, Hex Quick-Lock Shank for Stainless Brass and Sheet Metal Drilling, Deburring Tool Electricians UK, T3016 4-12

DRILL, ENLARGE AND DEBURR: Designed to centre, drill and deburr sheet material in one smooth operation, helping electricians, fabricators and installers reduce tool changes during panel and enclosure work. 5% COBALT HSS PERFORMANCE: High speed steel with 5% cobalt content supports reliable drilling performance on harder materials including stainless steel and brass, helping reduce premature wear from demanding applications. HEX QUICK-LOCK SHANK: Vorteck 1/4" Hex Quick-Lock shank provides a secure, slip-resistant connection with compatible quick-change chucks and impact driver holders during high torque drilling tasks. PRECISION GROUND CONSTRUCTION: Precision ground one-piece design supports accurate drilling, controlled hole enlargement and smoother cutting performance compared with lower quality multi-part step drills. VERIFIED STEP SIZES: Covers 4, 5, 6, 7, 8, 9, 10, 11 and 12 mm hole sizes; product dimensions 76 x 12 x 12 mm with product weight of 21 g.