13 Pcs Hex Shank Twist Drill Bit Set, 1.5 to 6.5 mm HSS Cobalt Drill Bits with 135° Split Point, Fast Change Metal Wood Plastic Drilling Kit for Power Tools Home Maintenance

Produktbeschreibung

Material Composition: HSS with 5% cobalt alloy reinforcement; Maintains cutting edges at 350°C operating temperatures; Optimized for stainless steel plate drilling (2-4 mm thickness) and cast aluminum automotive parts repair Efficient Chip Removal System: 45° spiral flute angle with polished grooves; Reduces friction heat during 3,000 RPM operate; Prevents bit binding when drilling deep holes in plywood, acrylic sheets and copper piping installations Secure Shank Compatibility: 6.35 mm hex shank meets ANSI standard; Firmly grips in impact drivers and drill chucks; Eliminates slippage during overhead drilling tasks on steel frame constructions or furniture assembly lines Graduated Size Versatility: 13 bits covering 1.5-6.5 mm range (0.5 mm increments); Replaces 20+ conventional drill bits for electrical conduit prep, PVC plumbing work, and motorcycle engine maintenance; Saves 60% tool change time in workshop environments Accurate Point Geometry: 135° split tip with edges; Self-centering action on curved surfaces reduces walking; Delivers clean entry holes in stainless steel kitchenware, hardwood flooring and polycarbonate greenhouse panels