45x152mm F/L x 298mm OAL 4MT T/S Armour Piercing Drill hand-tools-striking-prying koken 1/2" dr impact socket

koken 1/2" dr impact socket set - 12pc 3/8"-1

Cutting length 26mm

High temperature performance up to 1100 degrees C

Overall Length:172mm

300 x 170 mm

45x152mm F/L x 298mm OAL 4MT T/S Armour Piercing Drill hand-tools-striking-prying koken 1/2" dr impact socketUsed for heavy duty drilling in work Hardening steel with a manganese content of 12 14 percent . 4 Morse taper Overall length 298mm Flute Length 152mm Operating Conditions cutting speed between 3 4 meters per minute a feed of only 60 percent of standard drill Very rigid machine set up drilled without coolant Precautions drill must not touch work without feed being engaged no marking of work surface ie centre punch