UK Drills HSS Step Drill Bits Set Titanium Coated 3pc 3-20mm for Drilling on Hard Metal, Stainless Steel, Cast Iron

SIZE: 3 pc 3-20mm Bits. Step Drill Bit HIGH QUALITY MATERIAL: High quality drill bits are ideal for steel, plastic, wood and similar materials. SPLIT POINT & TWIST DESIGN: 118 degrees split point drill bits penetrate quicker with less pressure needed, minimizing bit walking (wandering) while ensuring a crisp, centered drill hole that doesn’t require a center punch. MULTIPLE APPLICATION: Perfectly suitable for Hard Metal such as Stainless Steel, Steel and Cast Iron as well as Wood, Aluminum Alloy and Other Softer Metals.Try to adjust the RPM when it fails to penetrate. DESIGN: Rolled High Speed Straight Shank HSS drill bit. Pay attention to speed, pressure and heat control during drilling.