BAIDETS Cobalt Drill Bit Set 13Pcs, M35 High Speed Steel Twist Jobber Drill Bit Set, for Hardened Metal, Stainless Steel, Cast Iron and Wood Plastic, 1/16"-1/4" with Metal Storage Case

BAIDETS provides high-quality quality, professional tools, and high-quality services, that wish to make your life more convenient and better! Specifications: Size: 1/16",5/64",3/32",7/64",1/8",9/64",5/32",11/64",3/16",13/64",7/32",15/64",1/4" Material: 5% Cobalt M35 HSS Angle Point: 135 Degree. Shank Type: Straight and Round Shank Features: 1.Made from M35 High Speed Steel and contain 5% Cobalt,which increases wear-resistance,durability and extra longer life span 2.Fully ground spiral groove design clears particles quickly,decreases friction and heat for faster drilling performance 3.135°quick-cut pilot split points are self-centering and can penetrate quickly with less pressure.Straight shank prevents walking and makes drilling precise and faster 4.Suitable for drilling holes as Stainless Steel,Copper,Cast Iron,Galvanized Pipe,Aluminum Alloy,Wood and Other Softer Metals 5.This drill bit fits the majority of power drill currently on the market and easy storage and DIY Instructions for use: 1.Keep the drill bits vertical to the object when drilling, Be sure to make both bit and work piece stable. Tilted bit is prone to break during drilling 2.Be careful when you use an electric drill.Please start from the lowest RPM and pressure 3.Drilling metal will accumulate an amount of heat. Necessary to use cooling liquid during drilling to keep the bit cool. Both ok to use lubricant oil and to pour water 4.It's highly recommended that you use a drill press to drill thick metals. Safety instructions: 1.Always wear safety goggles and safety items, because it's safe for you 2.Do not wear gloves to avoid hazard of getting caught in the tool and pulling your hand in to get mangled during bit spinning 3.Examine the bits before use for cracks or chips, Do not use damaged or bull bits