17x92mm F/L x 190mm OAL 2MT T/S Armour Piercing Drill Wshr HD 9/16Z The end also rotates to

The end also rotates to optimize the turning motion

Size: 20mm

5 PKT x 50pcs QUALITY ASSURED DELIVERED FREIGHT FREE NEW ZEALAND WIDE

one of a kind geometry

Increases production

17x92mm F/L x 190mm OAL 2MT T/S Armour Piercing Drill Wshr HD 9/16Z The end also rotates 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