Klein Tools Screwdriver/Nut Driver 11-in-1. The integrated screwdriver / nut driver shaft holds 8 popular tips and converts to 3 nut driver sizes. The blades are interchangeable for quick and easy switch out. Specifications for Klein Tools 11-in-1 Screwdriver/Nut Driver: Manufacturer: Klein Tools Color: Black Features of Klein Tools 11-in-1 Screwdriver/Nut Driver Multi-bit screwdriver / nut driver shaft holds 8 popular tips and converts to 3 nut driver sizes. Includes industrial strength heat treated bits: 3/8in 5/16in and 1/4in nut drivers #1 and #2 Phillips 1/4in and 3/16in slotted T10 and T15 TORX and #1 and #2 square recess. Interchangeable blade for fast and easy switch out; comfortable Cushion-Grip handle. Blast finish bit tips provide a firm hold and reduce cam-out. The following replacement bits are available: see Cat. No. 32482 (#1 Phillips and 3/16in Slotted) Cat. No. 32483 (#2 Phillips and 1/4in Slotted) Cat. No. 32484 (#1 Square and #2 Square) and Cat. No. 32485 (T10 TORX and T15 TORX). TORX is a registered trademark of Acument Intellectual Properties LLC. Package Contents: Klein Tools 11-in-1 Screwdriver/Nut Driver Klein Tools 32500: Screwdriver/Nut Driver 11-in-1