【Solid Clamping】This reduced shank twist drill bit's 3/8 triangular shank design is compatible with mainstream power tool interfaces, and enhances clamping stability through three-plane contact, thus avoiding slippage and deflection during high-rotation operations, which is very suitable for aluminium alloy window and door assembly, circuit board drilling and other light machining scenarios that require high precision Choose from our selection of 35/64 drill bits, including over 14100 products in a wide range of styles and sizes. Same and Next Day Delivery Specification: Material: HSS-Co Surface Treatment: Nitrided Black, Baked Yellow Model: A, B, C, D Length: 15., 2cm/5., 98in Working Length: 8cm/3., 15in(A/C/D), 7., 50cm/2., 95in(B) Cutting Diameter: 23/32(A), 35/64(B), 39/64(C), 43/64(D) Shank Diameter: 3/8 Cutting Angle: 135° Note: Please allow for manual measurement errors. 10pcs/Set 3.2mm M35 Triangular Shank HSS-Cobalt Cobalt Twist Drill Bits Hss Drill Bit Set 3/8" M35 Cobalt High Speed Steel HSS Twist Drill Bit For Steel Cobalt Drill Bits 【135° Open Angle Design】This 3-flats reduced shank twist drill's 135° drill tip angle design further optimises the cutting force distribution, making it more suitable for handling harder materials such as stainless steel and alloy steel plates than traditional drills. They are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys 【Anti-Rust and Corrosion Resistance】The black nitride and baked yellow treatment on the surface of this HSS-Co drilling bit improves wear resistance and also forms a dense oxidised layer, which slows down the risk of rust and corrosion in humid environments, especially suitable for users in the rainy season or coastal areas Package Included: 1 * M35 Reduced Shank Twist Drill Bit for Metal
