The ball end tip screwdriver 13-piece set features a ProGuard finish. The set includes the following sizes - 0.05 inches, 1/16 inches, 5/64 inches, 3/32 inches, 7/64 inches, 1/8 inches, 9/64 inches, 5/32 inches, 3/16 inches, 7/32 inches, 1/4 inches, 5/16 inches and 3/8 inches Bondhus screwdriver tools are engineered and manufactured for strength and efficiency. Bondhus is the sole hand tool manufacturer that designs handle sizes proportional to the tool tip's strength. This meticulous design reduces the risk of applying excessive torque, which could lead to stripping or breaking the tool tip or screw head. All handles feature cushioned surfaces to minimize fatigue during use and enhance grip, even when hands are wet or oily. The ball end is inserted into the screw at a 25 degree angle Design of ergonomic handle Ergonomically designed 13-piece standard length ball end screwdriver set with enhanced non-slip grip for precision handling and optimal torque application Bi-component handle featuring a robust inner core and a cushioned rubber exterior for enhanced grip and durability 13-piece standard length ball end screwdriver set with anti-roll design