10pcs Hex Head Allen Wrench Drill Bits Set 100mm Long SAE Metric Allen Screwdriver Bits Magnetic Tip Hex Key Screwdriver Socket Bit Set(1.5mm-12mm) Item Name:Allen Screwdriver Bits Material: S2 Steel Color:Black Shank:1/4 Inch Hex(6.35mm) Length: 100 mm Quantity & Size: 10pcs 100mm Metric Hex Head Allen Bit Size: 1.5mm,2mm,2.5mm,3mm,4mm,5mm,6mm,8mm,10mm,12mm 10pcs 100mm SAE Hex Head Allen Bit Size: 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16" 8pcs 50mm Inner Hex Head Allen Bit Size: 1.5mm,2mm,2.5mm,3mm,4mm,5mm,6mm,8mm. Feature 1. High QualityHeat treated, durability, has high hardne, not easy to wear. PLEASE MAKE SURE YOU CHOOSE THE RIGHT DRILL BIT AND CONTROL THE RIGHT SPEED OF THE DRILL. THIS OPERATION GREATLY PROLONGS THE SERVICE LIFE OF THE HEX DRILL BITS. 2. Profeional Hex Bit Set Are Made of S2 Alloy Steel, Very Well Made And Tough As Nails - Hardne can reach HRC60 degree. Hex key set fit for electric drills with speed regulating device, electric screwdrivers, hand screwdrivers.Please do not use drill bits on pneumatic tools, air dills, and the electric drill without speed regulation. A long lifetime of the drill bit is reached due to its durable construction and superior technology. 3. Nickel Plating Surface Treatment, Super Anti-Rust High quality, long lasting and durable. The Hex drill bit set is clearly marked that you can find what size you need quickly.Easy to take and use. 4. Magnetic Tips And 100mm Length - The hex allen screwdriver set is a little bit magnetic, which helps to keep nuts and bolts stuck to them. Can improve your work efficiency. Thumbs up! 100mm(3.94") length, longer than the market ones, More practical and convenient. Packing Includes 8pcs/10pcs x Hex head allen bits Detail Shows