Winner - Tapered Drill Rod

Taper: 4° 46`, 6°, 7°, 11° and 12°. Effective length: 400mm-4800mm. Shank: H22 X 108mm, H25 X 159mm. Quality aircraft alloy steel , state of art manufacturing, multiple precise heat-treatment. Maximum wear resistance, longest lifespan and outstanding performance in roughest working conditions.