General purpose metal drill bits Cylindrical ground right hand cutting helix and 118 point angle Finish is steam tempered black Made from hot-rolled high-speed steel HSS Jobber Drill Bits are a general-purpose metal drill bit. Manufactured from High-Speed Steel to DIN338, using a hot roll forging process, with a steam tempered black finish. They have a cylindrical ground right-hand cutting helix and a 118° point angle. DT5911: 10 Piece: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10mm. DT5912: 13 Piece: 1.5, 2, 2.5, 3, 3.2, 3.5, 4, 4.5, 4.8, 5, 5.5, 6, 6.5mm.
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