Draper expert 1 2 sq dr 15 piece tx star bit set draper expert 78277 b i expert quality i b bit set with 10mm hexagon bits manufactured from silicon steel hardened tempered with shot blast finish 1 2 square drive bit holder made from chrome vanadium steel hardened tempered and chrome plated packed in blow mould case and display sleeve br br b draper tx star products are compatible with 134 torx fixing systems b br br 134 torx is the registered trademark of camcar textr