This driver includes the 2 most popular specialty "clutch" bit tips found in recreational vehicles and mobile homes. Also includes 12 other popular bit tips used around vehicles and in the home. The shaft opening serves as a 1/4a ^2 hex driver. Loaded with 7 double end professional quality bits, this assortment of bit types and sizes provides the 14 most popular tips for driving screws. The shaft opening serves as a 1/4a ^2 hex driver! Hence the name "15-in-1a ^2. Specifications: Weight: .5 lbs Driver Features: Retractable Bit Cartridge, EZ Guide Collar, Palm Saver Cap Screwdriver Bits: Square, Phillips, 1/4a ^2 Hex Shaft, Clutch Bit, Flat, Torx Warranty: Lifetime Warranty Made in: USA