Hss Cobalt Drill Bit Set 1/4 in. x 12 in. Aircraft Extension Extra Long Deep Hole Drilling-3Pcs
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✔️【 COBALT DRILL BIT DIMENSION】:1/4"(Diameter) x 2-3/4"( Flute Length) x 12"(Overall Length)✔️【 COBALT MATERIAL】: HSS(M35) Cobalt Steel is the premium material with high hardness and red hardness to enable long drilling life and fast drilling performance.✔️【 SURFACE TREATMENT】: The Gold Oxide Ember finished surface treatment strongthen the hardness of drill bit body to ensure the long drilling life and better drilling performance.✔️【 SPLIT POINT ANGLE 135】 DEG.: No center punch is needed- the aggrevsive 135 deg. Split Point quick-cutting points are self- centering and penetrate quickly with less pressure. will not "walk" or"wander".✔️【 APPLICATION】: Best used for drilling deep hole in metal, high-carbon steel, aluminum and alloy steel, cast iron, stainless steel and titanium
✔️【 COBALT DRILL BIT DIMENSION】:1/4"(Diameter) x 2-3/4"( Flute Length) x 12"(Overall Length)✔️【 COBALT MATERIAL】: HSS(M35) Cobalt Steel is the premium material with high hardness and red hardness to enable long drilling life and fast drilling performance.✔️【 SURFACE TREATMENT】: The Gold Oxide Ember finished surface treatment strongthen the hardness of drill bit body to ensure the long drilling life and better drilling performance.✔️【 SPLIT POINT ANGLE 135】 DEG.: No center punch is needed- the aggrevsive 135 deg. Split Point quick-cutting points are self- centering and penetrate quickly with less pressure. will not "walk" or"wander".✔️【 APPLICATION】: Best used for drilling deep hole in metal, high-carbon steel, aluminum and alloy steel, cast iron, stainless steel and titanium
2019-08-20 08:25:58
