Chicago-Latrobe 550 115 Piece Heavy-Duty Cobalt Steel Jobber Length Drill Bit Set, Gold Oxide Finish, Round Shank, Spiral Flute, 135 Degree Point Angle. Greenfield heavy-duty aircraft jobber drills are made of cobalt steel with a bronze finish, split point, 135 degrees. They are designed for drilling in alloy, stainless, hardened, and tool steel as well as titanium and other hardened alloys. There are no finer drills made. This drill set features 29 fractional bits ranging from 1/16-inch to 1/2-inch by 64ths, lettered bits from A to Z, and 60 numbered bits from number 1 to number 60. Housed in a rugged indexed steel case with easy-to-read markings including tap information. 1/64-inches set size increment. 135 degree P3 split point is self-centering for reduced thrust and easier penetration. Made from premium cobalt high speed steel. Gold oxide finish add lubricity and easily identifies cobalt drills. Manufactured to NAS 907 Type J geometry aerospace specifications. Cutting length is 3 – 4 times the diameter. Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys. Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools. Round shanks allow use with a wide variety of toolholding systems. Your return must be in new and unused condition. After this time period, we cannot accept a damaged return. Damaged items will only be exchanged once we receive the damaged item back. Please include your return reason in detail. The item “Chicago-Latrobe 550 115pc Heavy-Duty Cobalt Steel Jobber Length Drill Bit Set Go” is in sale since Wednesday, March 15, 2017. This item is in the category “Home & Garden\Tools\Power Tools\Drill Bits”. The seller is “yozos” and is located in Crosby, Texas. This item can be shipped to United States.

• Brand: Greenfield
• Manufacturer Part Number: 46650
• UPC: 662355466506
• EAN: 0662355466506
• Item Model Number: 46650
• Item Weight: 0 pounds
• Product Dimensions: 0 x 0 x 0 inches
• Product Group: Drill Bits
• Product Brand: Greenfield Industries
• Manufactured By: Greenfield Industries