Sae and Metric, 20 Pieces Different Sizes’ Nut Driver Set for Drill, Meet All Your Daily Needs: Small tools great satisfaction. 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 52±2 HRC, More Than 10 Years of Experience in Hardware Tool Production. 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 for: 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 1/4" Double Hex Head L Type Wrench, Small Tool for Smaller Jobs, Special Narrow Spaces: Fit for nut drivers, drill bits. When there is no electricity, no electric drill, timely help! PLEASE: 1. Pay attention to the spring clamp and ball bearing and do not lose them. Without them, wrench cannot be used normally. To stop this, some of customers: put a piece of heat shrink tubing on each end. 2. Not a ratchet wrench, just a normal right angle handle wrench Convenient Storage - Losing The Nut Drivers? Not Anymore: Nut driver bit set come with a storage organizer to keep the pieces together, easier for carrying and organized storage. Here’s the can’t missed option for you, your family and friends. Impact nut driver set makes the project much easier and faster, makes life greater TLEEP 20 x Power Nut Driver Set for Impact Drill, SAE and Metric 1/4” Hex Head Drill Bit Set with 1/4" Double Hex Head L Type Wrench, Chrome Vanadium Steel Screwdriver Socket Set, Black Tool