17x92mm F/L x 190mm OAL 2MT T/S Armour Piercing Drill 1632250 stronger spring is adapted to

stronger spring is adapted to convert the striking power efficiently to twisting power

19 Blades: 10

knurling on the outside of female square drive makes it easier to hold and enables the extension bar to be used like a quick spinner

heavy duty steel construction9 - 5

17x92mm F/L x 190mm OAL 2MT T/S Armour Piercing Drill 1632250 stronger spring is adapted toUsed for heavy duty drilling in work Hardening steel with a manganese content of 12 14 percent . 2 Morse taper Overall length 190mm Flute length 92mm 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