276pc Titanium Twist Drill Bit Set with S2 Bits 135° Tip High Speed Steel, Size from 1/16" up to 1/2", Ideal in Wood Cast Iron Aluminum Alloy Plastic Fiberglass, Clear Lid Case

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Process Treatment: Titanium coated surface prevent rusting, which increase the hardness of the drill bit and reduces heat buildup, make the twist drill bit more wear-resisting for longer life Twist Design & Performance: The 135° fast cutting point is automatically centered and penetrates quickly with less pressure, prevent walking, clear chips and particles faster; Produced by precision fully ground which ensures chips move smoothly Premium Material: Drill bits made from high speed steel for strength and durability; Screwdriver Bits are made of S2 steel material for ultimate durability Scope of Application: Ideal for DIY projects and household maintenance and repair; All-purpose for use on Wood/Cast Iron/Aluminum Alloy/Plastic/Fiberglass drilling as well as multiple driving and fastening Visible Organization and Storage: Clear lid of 256 Piece Titanium Twist Drill Bit Set allows you to see drills at glance easily