4 mm to 12 mm HSS Step Drill Bit, Ti Coated Spiral Flute with Triangular Shank for Thin Metal, Plastic, Wood Drilling

Produktbeschreibung

Ti Coating: Features a gold Ti nitride finish that enhances surfaces hardness and reduces friction; The coating resists discolouration while prolonging bit life in abrasive materials like galvanised steel or aluminium alloys Multi Stage Hole Sizing: Integrates 5 accurate-ground steps (4 mm/6 mm/8 mm/10 mm/12 mm) in a single tool; Eliminates bit changes when creating consecutively larger holes in electrical enclosures or ventilation panels for deburring and chamfering in sheet metal fabrication Optimised Flute Geometry: Spiral grooves enable rapid chip evacuation from 4 mm-thick substrates; Prevents material buildup when drilling stacked PVC sheets or composite wood boards; Reduces heat generation for cleaner cuts in plastic junction boxes Triangular Shank Grip: 6 mm three-flat shank design prevents slippage in standard drill chucks; Ensures stable rotation during overhead or angled drilling on vehicle body panels; Compatible with impact drivers for quick installation tasks in tight spaces Soft Material Specialisation: Engineered for thin-type applications including 1.2 mm iron sheets, 2 mm aluminium profiles, and 3 mm acrylic displays; Not recommended for hardened steels but in HVAC ductwork, craft projects, and furniture assembly