24pc universal multi teeth gear lock socket for use with 1/2" drive ratchet or extension bar and 1/4" hex drive screwdriver insert bit set. Suitable for metric, imperial (6pt, 12pt), star/ Torx®, spline and some square bolts, nuts or screws. Specially designed 12-point gear lock profile fits up to 30% damage or broken heads. Sockets made of hardened and tempered Chrome Vanadium (Cr-V) steel and bits made of S2 impact steel with matt finish for corrosion resistance. Feature knurled ring for extra grip and performance. Set includes 72 teeth reversible ratchet with a 9mm 12-sided ring head and 1/4" hex drive adaptor for 1/4" square drive socket. Supplied in handy storage case.