19Pcs HSS M35 Twist Drill Set | 1-10mm High Speed Steel Bits for Iron/Aluminum/Stainless Steel | Red Storage Box | Long - lasting & Sturdy

Produktbeschreibung

Accurate Cutting - These HSS twist drills feature cutting opening double rear corners that accelerate drilling speed by 40%, delivering expert-level hole punching in metals and hardwoods. Industrial-Strength Performance - M35 high-speed steel drill bits undergo hardness strengthening treatment, maintaining sharpness through 3X more uses than standard carbon steel bits. Efficient Debris Removal - Deep U-shaped spiral grooves channel away metal shavings and wood chips during high-RPM drilling, avoiding bit clogging in dense materials. Multi-Material Versatility - Drill set handles 8+ surfaces including stainless steel (up to HRC25), cast iron, copper pipes, PVC panels and drywall with neat 90° entry holes. User Protection - Includes RPM guidelines (1000 for 10mm bits) and rotation force recommendations (36V+ drills preferred) to avoid bit breakage and ensure steady performance.