Size:.25mm Product Information These Carbide Mircro Drill Bits are from the Union Company in Japan. We aquired them through our distributer in South Korea where our business was based. They are of the highest quality. All bits are 1/8" 3.175mm shank Many Uses: Toy makingModel Cars, trains, trucks, boatsJewelry makingCNC Circuit board productionHobbiesWoodworkingSoft MetalsArts and craftsInstallationmore.............. These bits are made for extreme production PC board and Cell phone manufacturing in Korea.  They are made from the highest quality steel money can buy for this type tool at an affordable price.  These will far outlast any cheaper bit you can buy at the local hardware stores and will amaze you with their durability.  They will be shipped in a protective plastic case and are ready to go to work today.
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