19Pcs HSS Twist Drill Set | M35 High Speed Steel for Iron/Aluminum/Stainless Steel | Expert Drill Bits for Electric & Bench Drills | 1-10mm with Storage Box

Produktbeschreibung

High-Speed Drilling - These HSS twist drills feature cutting opening double rear corners that accelerate hole punching by 30%, delivering quicker drilling speed and improved work efficiency for experts. Enhanced M35 Steel - Hardness-strengthened drill bits maintain effectiveness 2X longer than standard bits, with resilient coating that reduces friction and extends tool life through 500+ drilling passes. Deep Spiral Design - U-shaped grooves efficiently discharge 90% more metal/wood shavings during high-speed use, avoiding clogging when drilling through iron, aluminum, or stainless steel. Multi-Material Compatibility - Accurate-ground drill set works on 8+ materials including copper pipes (1-3mm), plastic sheets (up to 10mm), and drywall (recommended at 800-1000RPM for neat holes). Expert-Grade Storage - Red plastic case organizes 19 size-specific bits (1-10mm in 0.5mm increments), with molded slots that avoid damage during transport to construction sites or workshops.