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A high quality American-made jobber Left Hand drill bit made by Triumph Twist Drill Co. These Left Hand drill bits are specially designed for removing broken bolts, screws, & studs (By using these bits in a drill on reverse). They may also be used in conjunction with "Easy-Out" bits in the broken bolts after using the Left Hand bits too. These twist drill bits are jobber length, & are made of High Speed Steel to hold their sharp cutting edges longer & have a bright finish. For drilling in a variety of materials, including iron, low & medium carbon steel, stainless, aluminum, aluminum alloys, brass, bronze - soft & medium. Made in the USA.
Triumph Twist Drill has manufactured High-Quality cutting tools for over 50 years. Starting in 1952, founder Harry Beck set out to provide customers with a product that the drill industry had been lacking. Harry, along with his son Jim and Cy Brock, decided to enter the small drill business and create quality, handmade products with the customer in mind.
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Drill Bit Diameter Decimal Equivalent Flute Length Overall Length Model 1/16" .0625 7/8" 1 - 7/8" 011104 5/64" .0781 1" 2" 011105 3/32" .0938 1 - 1/4" 2 - 1/4" 011106 7/64" .1094 1 - 1/2" 2 - 5/8" 011107 1/8" .1250 1 - 5/8" 2 - 3/4" 011108 9/64" .1406 1 - 3/4" 2 - 7/8" 011109 5/32" .1562 2" 3 - 1/8" 011110 11/64" .1719 2 - 1/8" 3 - 1/4" 011111 3/16" .1875 2 - 5/16" 3 - 1/2" 011112 13/64" .2031 2 - 7/16" 3 - 5/8" 011113 7/32" .2188 2 - 1/2" 3 - 3/4" 011114 15/64" .2344 2 - 5/8" 3 - 7/8" 011115 1/4" .2500 2 - 3/4" 4" 011116 17/64" .2656 2 - 7/8" 4 - 1/8" 011117 9/32" .2812 2 - 15/16" 4 - 1/4" 011118 19/64" .2969 3 - 1/16" 4 - 3/8" 011119 5/16" .3125 3 - 3/16" 4 - 1/2" 011120 21/64" .3281 3 - 5/16" 4 - 5/8" 011121 11/32" .3438 3 - 7/16" 4 - 3/4" 011122 23/64" .3594 3 - 1/2" 4 - 7/8" 011123 3/8" .3750 3 - 5/8" 5" 011124 25/64" .3906 3 - 3/4" 5 - 1/8" 011125 13/32" .4062 3 - 7/8" 5 - 1/4" 011126 27/64" .4219 3 - 15/16" 5 - 3/8" 011127 7/16" .4375 4 - 1/16" 5 - 1/2" 011128 29/64" .4531 4 - 3/16" 5 - 5/8" 011129 15/32" .4688 4 - 5/16" 5 - 3/4" 011130 31/64" .4844 4 - 3/8" 5 - 7/8" 011131 1/2" .5000 4 - 1/2" 6" 011132