NIUNIU Attach these Versatile Extender Bars to any Powered/Cordless Drill Chuck or Impact Driver to turn it into a High-Speed Nut Driver Useful for Automotive Mechanic Vehicle Repairs, Technicians, Handyman Hobbyist Developments to use with sockets on Hardware/Tire Nuts, Lag Bolts, Hex Head Cap Screws at Home, Workshop Factory or Construction Site. Used in the installation of pneumatic screwdriver, electric screwdriver, pneumatic drill, manual screwdriver and other installation for the hexagonal tool .It is a good accessory for conversion. Great for the DIY, household maintenance, and most general repairs, not for industrial work. A great tool addition to any tool box set. Color: blue+red+yellow Size: Large is 74mm long, Medium is 65mm long, Small is 65mm long Package Contents: 3pcs Color Beaded Card Lock Post Warm prompt: 1.As different measuring methods,it will occur 1-3 cm deviation about the items,please ensure that it is okay for you before ordering. 2. Because of different monitors and lamplight, the picture may not reflect the actual color of the item, really thank you for your kind understanding 3. Only the above package contents, excluding other products.