The Carlyle 19-1 Ratcheting Screwdriver offers 19 functions into one compact tool. Eight double-sided bits are constructed from S2 material for durability and strength. The bits include multiple philips, slotted, star, hex and square bit sizes. The handle can also be utilized for 1/4”, 5/16”, and 7/16” nut drivers and the bits store securely into the handle. This screwdriver is backed by a limited lifetime warranty.