Quantity: 10 bits (2 each) 1/4 Cutting Length Size: 1.25mm TO 1.65mm 2 each: 1.25mm 1.35mm 1.45mm 1.55mm 1.65mm Product InformationThese 1/4 Cutting Length Carbide Mircro Drill Bits are from the Union Company in Japan. We acquired them through our distributor in South Korea where our business was based. They are of the highest quality.All bits are 1/8 3.175mm shankMany 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. These are designed to work in a rapid production environment in multi-million dollar facilities all day, 7 days per week. They will be shipped in a protective plastic case and are ready to go to work today. 1/8 3.175mm shank Shipped in protective plastic case Japanese made tungsten carbide bits Multi-use: CNC, PCB, Jewelry, Toy Making, Installation.... Short Length 1/4 Flute UPC 700424792092 Brand Name Daewon Industries Shank Type Straight Unit Count 10.0 Count Item Weight 0.15 Pounds Part Number DAE-ShortL-125to165 Manufacturer Union Company Material Type Tungsten Carbide Tool Flute Type Straight Surface Recommendation Glass,Plastic