25x108mm F/L x 225mm OAL 3MT T/S Armour Piercing Drill 6851460 5 x 20 Metric Coarse

5 x 20 Metric Coarse 50 Pieces Zinc Plated Hex Bolts & Nuts

(Closely resembles the "India Stone")

Set expands on the range of the GS-21 drill sharpening machine

thin body for a faster screwing action

Trak-Star cutting technology to be used in multiple systems

25x108mm F/L x 225mm OAL 3MT T/S Armour Piercing Drill 6851460 5 x 20 Metric CoarseUsed for heavy duty drilling in work Hardening steel with a manganese content of 12 14 percent . 3 Morse taper Overall length 225mm Flute length 108mm 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