Presto 11111-78 - 7/8" HSCo8 DIN345 MORSE TAPER SHANK DRILL - DIN1412C SPLIT POINT

Heavy-duty drill made of 8% cobalt material with excellent heat resistance. To drill steels with tensile strength up to 1.400 N/mm2, very hard bronze, stainless steels as well as heat and acid resistant steels.

Design characteristics
Point grinding: cone relief point
Point angle: 135°
Web thinning: form C
Helix angle: high
Web thickness: strengthened
Web taper: strengthened
Flute form: normal
Tolerance of dia.: h8