Diamond Drill Bit Set 1/4" - 1/2" -3/4" *The Heavy duty hole saws plated with nickel with diamond coating gives superior performance on glass, marble, slate, and tile. Nickel plated. Segmented design works better and lasts longer. Sizes (Shank diameter: 3/8"): 1/2", 3/4", 1", To prolong the life of these bits, you can use on a low speed with coolant (water/oil). *Do NOT run dry. Diamond Coated Tools will work best if you use water to keep the tools cool Package Includes * Bit Set 1/4" - 1/2" -3/4". Factory direct products bulk packages. Warranty *We promise all product from OSKO can enjoy a 30 Days Money Back or Free Exchange against man-made damage from date of purchase and 24 Hours friendly customer service!
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