COMOWARE Cobalt Drill Bit Set- 115Pcs M35 High Speed Steel Twist Jobber Length for Hardened Metal, Stainless Steel, Cast Iron and Wood Plastic with Metal Indexed Storage Case, 1/16″ – 1/2″. 115 PIECES INCLUDED: 29pcs Fractional Size:1/16 to 1/2 in 1/64th increments; 26pcs Letter Size: A To Z; 60pcs Numbered Size: #1 To #60. HSS WITH 5% COBALT: Durable, Higher Heat & Abrasion Resistance. PRECISE 135 SPLIT POINT & TWIST DESIGN: Prevent walking, clear chips and particles faster. PROFESSIONAL & WIDELY USE: M35 Cobalt HSS is more suitable for hardened material. Particularly successful in cutting through hard metals such as stainless steel, cast iron, high temperature alloy, titanium alloy, hard plastics and woods, and also can be used for softer materials. ORGANIZED HOLDER: Set includes the drill bit holder with size index for easy storage and organizing. Cutting Angle String: 135 Degrees. Package Dimensions? 14.65 x 5.08 x 2.83 inches; 7.61 Pounds. Date First Available? May 25, 2018. Best Sellers Rank: #6,335 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #15 in Jobber Drill Bits. #15 in Jobber Drill Bits. Customer Reviews: 4.5 4.5 out of 5 stars 5,290 ratings. Except on weekend or public holidays. We stand behind our products. Your receive the wrong item.