uxcell 14pcs Titanium Twist Drill Bit Set 1/16"- 1/2" Drilling Dia High Speed Steel Drills for Hardened Metal, Stainless Steel, Cast Iron, Wood, Plastic with Case

14pcs Drill Bits Diameter: 1/16" ,5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8", 1/2", made of high speed steel material with a 6.35mm / 0.25" hex shank.
Titanium Coated Surface: Made of high-speed steel with titanium nitride coating which can increase the hardness of the twist drill and reduces friction between the bit and the material being drilled. Suitable for use in both handheld drills and drill presses.
High Hardness Drilling Performance: Suitable for hardened materials and hard metals, such as cast iron, malleable iron, aluminum, wood, plastic etc., and also suitable for soft materials. Great replacement for your dull drill bit to improve work efficiency.
Well-Packed Drill Bit Set: The drill bit set is well-organized in a sturdy case with small store grids for each size of drill, easy to find out and store bits, convenient to carry out.
Note: Please add coolant when drilling continuously at high speed, the working life of the twist drill bits can be largely prolonged by proper usage. To ensure optimal performance and longevity, it is important to use proper drilling techniques when using this twist drill bit.

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