The Lenox Tools 23932 9-in-1 Mullet-tool Screw Driver is a versatile and comfortable driver that will allow you to work with a variety of fasteners. The 6-in-1 Screw Driver features a slip resistant, ergonomic grip that MAX the amount of torque you can use. The tool has a number 1 Phillips bit, number 2 Phillips but, a 3/16 inch slot bit, a 1/4 inch slot bit, number 2 Square drive, number 3 Square Drive, a 1/4 inch Nut Driver, a 5/16 inch Nut Driver and a 3/8 inch Nut Driver. The walls on the nut drivers are 25percentage thicker than traditional nut drivers which reduces stripping and provides a longer life. This tool is ideal for anyone who deals with a variety of different fasteners on a routine basis, like electricians and maintenance workers.