High-Speed Steel (HSS 6542) Step Drill Bits 4-20mm - 2pcs Set for Metal, Wood & Plastic - Spiral Groove & Triangular Handle for Smooth Drilling - Perfect for DIY, Construction & Electrical Work

Durable to keep new shine for a long time.Features:Best Suitable Materials: The Thickness of Thin Iron Plate, Aluminum material, Insulating plate and PVC plate is within 5mm. Suitable for use on workpieces with hardness below 28°, Such as Aluminum and Stainless steelYou can use water to cooling it when it is work and it can be used for even longerYou can use one drill for different aperturesNo need of center punch. Compared with the ordinary twist drill, it is not easy to break and it can be used for deburring, chamfering and open holeRecommend the drilling speed of 250--400rpmApplied to: Pistol drill, bench drillAutomatically Deburrs Holes As You Drill.They Also Help To Enlarge Existing Holes.A Drill with a plastic boxSpecifications:Material: HSS6542Shank Type:Triangle shankType: Spiral grooveSize:4-12mm 9 Steps (4-5-6-7-8-9-10-11-12mm) Shank diameter 6mm4-20mm 9 Steps (4-6-8-10-12-14-16-18-20mm) Shank diameter 8mm4-32mm 15Steps (4-6-8-10-12-14-16-18-20-22-24-26-28-30-32mm) Shank diameter 10mm

Step drills quickly and smoothly drill holes in steel, aluminum, wood, plastic, etc.

Material HSS6542

Shank TypeTriangle shank

Type Spiral groove

Best Suitable Materials The Thickness of Thin Iron Plate, Aluminum material, Insulating plate and PVC plate is within 5mm. Suitable for use on workpieces with hardness below 28°, Such as Aluminum and Stainless steel