Spiral Step Drill Bit 10 Sizes | High Speed Steel Grooved Stepped Drill Bits for Metal/Wood/PVC | 3 - Sided Shank Prevents Slipping | 1 / 4in to 1-3 / 8in Range

Produktbeschreibung

Secure-Grip 3-Sided Shank - Spiral step drill bit features a unique triangular shank that locks firmly in drill chucks, eliminating slippage during high-speed drilling. Ideal for cordless drills with 3/8 chuck size. Accurate Varied-Size Drilling - This 10-size step drill creates holes from 1/4 to 1-3/8 without bit changes. Saves 70% tool-switching time when working with steel plates (up to 0.07 depth) or acrylic/PVC boards. Optimized Spiral Flute Design - High speed steel construction with enhanced groove pattern cuts 30% quicker than standard bits. Built-in deburring feature delivers cleaner holes in metal sheets and wooden materials. Vibration-Reducing Structure - Reinforced HSS body withstands 15,000 RPM drilling. Three-sided shank absorbs force, reducing workpiece chatter by 40% for straighter holes. Workshop-Tested Durability - Heat-treated dark yellow coating resists abrasion during extended use. Lubricant-ready design maintains effective cutting edges through 500+ drilling operations in tough materials.