115Pcs Cobalt Drill Bits Set, M35 HSS 135° Tip, Twist Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Plastic and Wood with Indexed Storage Case, 1/16″-1/2″. 115 Pieces Set Includes: 29pcs Fractional Size: 1/16 to 1/2 inch bits in 1/64th increments; 26pcs Letter Size: A To Z; 60pcs Numbered Size: #1 To #60; Set includes the drill bit holder with size index for easy storage and organizing. Perfect Drill Bits: Precision grinding process for a clean surface and high grinding accuracy. Universal round drill shank, widely applicable of tool holding systems and tightly clamped. 135 Split Point & Twist Design: The 135 degree fast cutting point is automatically centered and penetrates quickly with less pressure, reducing walking, fully ground drill bit with sharp and durable cutting edge. Twist design for clear chips faster. Enhanced M35 Alloy Material: These drill bits contain 5% Cobalt alloy steel, which increases wear resistance and durability. Industry grade HSS M35 drill bit set, harder than HSS 4241 used in other similar drill bits set. Professional After-Sales Service: The outer box for stepped drill bit is sturdy and easier to carry and store. Cutting Angle String: 135 Degrees. Tool Flute Type: Spiral. Package Dimensions? 15.39 x 6.18 x 3.94 inches; 7.45 Pounds. Date First Available? August 3, 2023. Best Sellers Rank: #12,086 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #22 in Jobber Drill Bits. #22 in Jobber Drill Bits. Customer Reviews: 4.4 4.4 out of 5 stars 244 ratings. Except on weekend or public holidays. We stand behind our products. Your receive the wrong item.