Power Tec 91170 Stufenbohrer, 4 30 mm, in 2 mm Stufen

Drill diameters from 4 - 30mm in 2mm increments, without the need to change tools. Spiral flute provides Taiwano cutting edges for faster drilling and includes edge breaker & self starter. Step drill has a deburring zone which can deburr the cutting edge. 10mm shank. HSS Titanium-nitride coated to increase tool life.