Alltrade 640071 33 Pc Mechanics Tool Set Includes 1/4" Dr. 6 Pt. Sockets: SAE 5/32" thru 1/2", Metric 6, 7, 8mm; 3/8" Dr. Spin Disk Ratchet; 3/8" Dr. 3" Extension; 3/8" to 1/4" Adapter; 3/8" Dr. 12 pt. Sockets: SAE 3/8" thru 3/4", Metric 9, 10, 11, 12, 13, 14, 16, 17, 18mm; 3/8" Dr. 5/8" Spark Plug Socket. Meets or exceeds ANSI standards. Lifetime warranty.