Bosch 9 Piece S Extra Hard Screwdriver Bit Set

The Bosch 9 Piece S Extra Hard Screwdriver Bit Set is a set of PH1, PH2 and PH3 screwdriver bits designed for universal screw-driving with screwdrivers and drill drivers. Each bit is made from S2 Modified Steel and goes through an optimised heat treatment process, giving extra-hard quality for general fastening work. This makes the set a practical choice for tradespeople and DIYers who need reliable bits for everyday screw-driving. The tapered torsion zone absorbs force and vibrations, helping the bit cope with torque peaks. The 1/4-inch external hex shank gives a strong connection and maximum torque transmission in three-jaw chucks and ¼" internal hex tool holders.