This 4 Piece Tamperproof Star Bit Set with 1/2 inch drive is engineered for demanding applications such as cylinder head bolt removal on major vehicle brands. Each 100mm bit is crafted for strength and precision, combining chrome vanadium sockets with durable silicon steel bits. Designed for professional use across automotive and heavy-duty tasks, the set ensures safe, efficient fastener engagement and comes supplied on a convenient socket rail. Features and Benefits Drive Size 1/2 inch ideal for high torque requirements Socket Size and Range T70, T80, T90, and T100 for wide vehicle coverage Socket Type tamperproof Star profile equivalent to 6-sided TORX Material and Finish chrome vanadium sockets with silicon steel bits for enhanced strength and wear resistance Size System metric Number of Pieces 4 for key automotive applications 100mm length provides access to deep-set fasteners Compatible with Audi BMW Citron Ford Mercedes-Benz Renault and MAN vehicles Supplied on socket r