This stubby screwdriver set is made from chrome vanadium steel the blades have been hardened & tempered abd have satin chrome plated finish with sand blasted tips. They are fitted with soft grip handles which have moulded inserts for enhanced user comfort. PZ Type products are compatible with * Pozidriv / Supadriv fixing systems. * Pozidriv / Supadriv are registered trademarks of Trifast Plc