Drillco Series 500 135° Split Point Cobalt Heavy Duty Jobber Bits

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Heavy duty construction made to Type J aircraft specifications. Used for drilling holes in hard, tough materials such as stainless steel, titanium high temperature and high strengt h alloys. High red hardness of cobalt permits speeds 30% greater than HSS drills. Series: 500 Fractional Cobalt Gold 135° Point Straight Shank Size Flute Length Overall Length Part # 3/64" 3/4" 1-3/4" 500A103 1/16" 7/8" 1-7/8" 500A104 5/64" 1" 2" 500A105 3/32" 1-1/4" 2-1/4" 500A106 7/64" 1-1/2" 2-5/8" 500A107 1/8" 1-5/8" 2-3/4" 500A108 9/64" 1-3/4" 2-7/8" 500A109 5/32" 2" 3-1/8" 500A110 11/64" 2-1/8" 3-1/4" 500A111 3/16" 2-5/16" 3-1/2" 500A112 13/64" 2-7/16" 3-5/8" 500A113 7/32" 2-1/2" 3-3/4" 500A114 15/64" 2-5/8" 3-7/8" 500A115 1/4" 2-3/4" 4" 500A116 17/64" 2-7/8" 4-1/8" 500A117 9/32" 2-15/16" 4-1/4" 500A118 19/64" 3-1/16" 4-3/8" 500A119 5/16" 3-3/16" 4-1/2" 500A120 21/64" 3-5/16" 4-5/8" 500A121 11/32" 3-7/16" 4-3/4" 500A122 23/64" 3-1/2" 4-7/8" 500A123 3/8" 3-5/8" 5" 500A124 25/64" 3-3/4" 5-1/8" 500A125 13/32" 3-7/8" 5-1/4" 500A126 27/64" 3-15/16" 5-3/8" 500A127 7/16" 4-1/16" 5-1/2" 500A128 29/64" 4-3/16" 5-5/8" 500A129 15/32" 4-5/16" 5-3/4" 500A130 31/64" 4-3/8" 5-7/8" 500A131 1/2" 4-1/2" 6" 500A132 * All Pictures Shown Are For Illustration Purpose Only. Actual Product May Vary Due To Product Enhancement. Show more