Feature

●Set of 3: 0.2 - 0.8 inches (4 - 20 mm), 9 Tiers (Length 3.0 inches (75 mm), 4 - 12 mm), 9 Tiers (Length 2.9 inches (74.5 mm), 4 - 12 mm), 5 Tiers (Length 2.6 inches (66 mm)). Includes storage bag
●✅ HIGH QUALITY MATERIAL: High Speed Steel (HSS Steel) It has excellent characteristics of toughness, impact resistance, abrasive grain, hardness, and red hardness. It is harder than ordinary steel step drills and has excellent sharpness
●✅ DESIGN BENEFITS: The step drill design reduces pressure when cutting, good discharge of powder, and makes cutting smooth. Stair grooves prevent chuck from slipping
●Practicality: The step drill opens the holes in order from small holes to large holes, so you can adjust the opening of multiple sizes and magnification of holes. The hexagonal axis is suitable for mounting drill bits, such as impact drivers, electric drills, charging drills, etc
●Range of application: The spiral shape is ideal for stainless steel and has less welding and smooth drilling. An indispensable tool for drilling stainless steel, thin iron plates, aluminum plates, wood, vinyl, resin, etc., for household DIY, enlarging the lower hole, chamfering, deburring, etc

Description