TEKTON 1/4-Inch and 3/8-Inch Drive Star Socket Set, Cr-V, E4-E18, 10-Sockets | 1355 Female star sockets fit external star (Torx) fasteners commonly found on seat mounts, brake system components, and steering columns Notched drive end locks onto drive tang to prevent sticking on fastener or being dropped Made from premium chrome vanadium steel with a durable chrome plated finish Use with 1/4 in. and 3/8 in. drive ratchet or extension