TLEEP 20 x 1/4” Hex Head Power Nut Driver Set for Impact Drill and 10 x 1/4 Inch Hex Head Allen Wrench Drill Bits 100mm, Metric 1.5mm to 12mm

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[20 PIECES, 10 DIFFERENT SIZES’ NUT DRIVER SET FOR DRILL]- to meet your different needs. 10PCS impact nut driver set (Standard): 1/2, 7/16, 3/8, 11/32, 5/16, 9/32, 1/4, 7/32, 3/16, 5/32 inch; 10PCS Power Nuts Driver Drill Bit (Metric): 12mm, 11mm, 10mm, 9mm, 8mm, 7mm, 6mm, 5.5mm, 5mm, 4mm. Thumbs up! [VERY WELL MADE AND TOUGH AS NAILS - EXTRAORDINARY TECHNOLOGY & PROFESSIONAL & DURABILITY] - The nut driver set is made from forged and hard chrome vanadium steel, the hardness can reach 52±2 HRC; With the corrosion-resistant sandblasted finish to make it more durable. Great nut drivers, durable, easy to use. [UNIVERSAL 1/4 INCH HEX SHANKS] fit Quick-Change Chucks and Any Drill or Driver, electric screwdriver, socket wrench, pneumatic impact wrench, rechargeable drill, screwgun and so on. Really help with assembling and dissembling. Best suited for impact use and impact rated. Need a hex adapter to use it with a socket wrench. It's widely used in household DIY, auto parts, woodworking, professional machine repairing, etc. Fit for: Dewalt drill, HVAC, Hitachi and so on. [TLEEP 1/4 inch Allen Wrench Drill Bit Set Includes 10 Most Popular Metric Sizes] - 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm. Bit set shank: 6.35mm/ 1/4", Length: 100mm(3.94"). Heat treated, durability, has high hardness, 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. [Professional Hex Bit Set Are Made Of S2 Alloy Steel, Very Well Made And Tough As Nails, Magnetic Tips And 100mm(3.94inch) Length] - Hardness 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.