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Osborn Goldex 81505 series jobber drill bits. Suitable for drilling stainless steels and other difficult to cut materials. Features & Benefits • DIN 338 • HSS-E (High Speed Steel, 5% Cobalt) • 135° point angle • 33° helix angle Specifications • Diameter: 5.9mm • Length: 57mm • Quantity: 10 • Drill Body Tolerance: h8