Dormer 5972752 G314 Conical Step Drill Bit, 4 mm Dia Min Hole, 20 mm Dia Max Hole, HSS, 9 Hole Sizes, 8 mm Shank

Dormer Step Drill Bit, Conical, Series: G314, Metric, 4 mm Diameter Minimum Hole, 20 mm Diameter Maximum Hole, 76 mm Overall Length, 4 mm Step Depth, 9 Hole, 8 mm Shank, Straight Shank, 20 deg Point, Right Hand Cutting Direction, HSS Cutting Edge, HSS, Bright, Applicable Materials: Aluminum, Ferrous, Non-Ferrous Metals, Plastic and Wood