General purpose drills for steels, cast steel, grey cast iron, malleable cast iron, nickel brass, aluminium alloy and graphite.
Industrial quality. Ground flute, blue finish. Supplied in indexing metal cases.
Point angle: 118, helix angle: normal, web thickness: standard, relief angle: 10-20, tolerance of diameter: h8, tolerance of shank: f11.
Manufactured to BS328 : Part 1 DIN 338N & ANSI B94 - 11M.
Set contains: Gauge 1-60.
