3pcs Screwdriver Extension Bits are built-in magnetic, for use in handheld controllers or power drill to extend all kinds of screwdrivers. Features:The interface has a locking mechanism, built-in magnetic, automatic pop-up batch head. Extend all kinds of screwdrivers, bits for screwdriver conversion applications. Quick clamping, greatly improve work efficiency. For use in handheld or power drill drivers, it is 1/4 inch female 1/4 inch male holder magnetic bit bit. It is helpful to remove or tighten a large number of screws after they have started or loosened. Suitable for drilling machine, screwdriver, batch head and others for transferring. It has a hardened and steel hardened shaft with a quick release plate. Specifications:Material: Chrome Vanadium Stainless Steel Color: Black Hex Handle: 6.35mm( 1/4")Fir for: 1/4" shank dirver bitPackage weight: 118g / 4.16oz Package size: 170*50*10mm / 6.69*1.97*0.39inPacking List:3*screwdriver extension bitsMany questions about Dropshipping services are following:1. How many orders can you handle per day? We are a large company in Shenzhen, China, with a large warehouse that can handle large orders every day. We ship countless packages every day. We can guarantee the order you request.2. How fast can you process orders? We will arrange the shipment as soon as possible after you pay for your order. Priority delivery for dropshipping order3. Can you ship an order without any receipts, invoices and promotional offer inside the package? Absolutely! No invoices, receipts, promotional offer if you leave notes on the order (if you want, we can deliver.)4. If you need other products? We can supply most of the products you need as much as possible1If you have any other questions, please feel free to . We are very grateful for your cooperation with you.5. We can support Dropshipping of CSV/Excel files.6. There is no limited inventory to fulfill orders on a daily basis