The DEWALT DWMT81533 172pc mechanics tool set features full polish chrome for adonit-corrosion resistance. The 72 tooth ratchet is ideal for high torque ratcheting. The vinyl grip bit driver, durable anti-slip screwdriver provides maximum comfort. This set comes within a durable blow molded case designed of high quality plastic, with metal latches which provides protection and storage for your tools. Backed by a lifetime warranty. This set contains: (2) ratchets; 1/4” & 3/8” drive pear head ratchets: (22) 1/4” drive 6 point sockets: (SAE) - 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 1/2“, 9/16” and (mm) - 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm: (20) 1/4” drive 6 point deep sockets: (SAE) - 5/32", 3/16", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 1/2" and (mm) - 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm: (22) 3/8” drive 6 point sockets: (SAE) - 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4“, 13/16”, 7/8” and (mm) – 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 21mm: (22) 3/8” drive 6 point deep sockets: (SAE) - 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4“, 13/16”, 7/8” and (mm) – 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 21mm: (10) combination wrenches: (SAE) – 11/32”, 3/8", 7/16", 1/2", 9/16“ and (mm) - 10mm, 11mm, 13mm, 14mm, 15mm: (1) 1/4” drive 3” extension bar, (2) 3/8” drive 3” & 6” extension bars, (2) 3/8” drive 5/8” & 13/16” spark Plug sockets, (1) 3/8” drive female to 1/4” drive male adapter: (17) nut bits: (SAE) - 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16“, 1/2” and (mm) - 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm: (28) hex keys: (22) specialty bits: (1) drive bit driver.