Makita D-35639 18 Drill Bit Extension, 7/16 Hex Shank

Using the Makita D-35639 drill bit extension is easy. First, make sure your drill has a 1/2-inch capacity chuck. Then, attach the extension to a 7/16-inch hex shank drill bit by tightening the set hex screw for a secure connection. You're now ready to drill deeper holes in wood. When using, don't push too hard as it might damage the bit or the extension. After use, clean the extension with a dry cloth to keep it in good condition. Store it in a dry place to prevent rust. This will help ensure a long life for your Makita D-35639 drill bit extension.