The #2 Phillips Power Bit, 6-1/8", 5/pk (191V02-0) is for use with Makita 18V LXT® Brushless Autofeed Screwdriver (XRF03, sold separately). These #2 Phillips Power bits have many uses, including attaching decking, subfloors, and drywall. They are made of high quality steel for long life. They are easy to install for added user convenience. Sold in the convenient 5 pack so there are plenty to have around for different jobs or tasks.