The Tamperproof spanner screwdriver is a complete security screwdriver set in one driver. This 15-in-1 screwdriver is a must for all commercial and industrial tradesmen including electricians, locksmiths, telephone technicians, maintenance personnel, etc. The Tamperproof assortment includes the most popular security bits: various sizes of Spanners, Hex Pins and Torx Pins. The shaft opening also serves as a 1/4a ^2 hex driver! Specifications: Weight: .5 lbs Driver Features: Palm Saver Cap, Retractable Bit Cartridge, EZ Guide Collar, Hex, Tamperproof Screwdriver Bits: 1/4a ^2 Hex Shaft, Torx-Pin, ;Hex-Pin, Spanner, Torx Made in: USA Warranty: Lifetime Warranty