❶ PREMIUM MATERIAL:High Grade High Speed Steel with Cobalt 5% to ensure the high hardness over HRC 64-66, and wear-resistance, abrasion-resistance, high red hardness.
❷ BEST CUTTING TIP:Double End 135 Deg. Split Point Drill Angle to guarantee the best self-centering and positioning and drill smooth and quicker than normal point angle.
❸ FLUTE FIGURES:Efficient Helix Flute Design to keep the quickest removal of chips and debris through flute during penetration of workpiece.
❹ SURFACE TREATEMTN:Ember finished nitrided to enable the high hardness of surface and wear-resistance to keep long tooling life.
√Made of High Quality Premium HSS material, Cobalt High Speed Steel to ensure the Double End drill Bits Strong and double life-time compared with other drill bits
√Designed For Drilling Steel, Metal Sheet, Aluminum, cast iron with 2 cutting Points can drill more life time
√Hardened and tempered Cobalt M35 high-speed steel double-end bits can be reversed if one side is worn
√Precision ground, bright finish with polished flutes that increase chip ejection
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