Professional socket set manufactured from hardened and heat treated Chrome Vanadium steel. Fully polished with a mirror finish. Covers sizes from 4 to 32mm. Includes 72-tooth ratchet wrenches, spark plug sockets, extension bars, female TRX-Star* sockets, socket bits, combination spanners, bits, hex keys and accessories. Supplied in storage case.Contents: 1/4"Sq Drive Standard Sockets; 4-14mm, 1/4"Sq Drive Deep Sockets; 4-10mm, 1/4"Sq Drive Female TRX-Star* Sockets; E4-E8, 1/4"Sq Drive Socket Bits, 1/4"Sq Drive Extension Bars; 50, 100mm, 1/4"Sq Drive Ratchet Wrench, 3/8"Sq Drive Standard Sockets; 10-19mm, 3/8"Sq Drive Deep Sockets; 10-15mm, 3/8"Sq Drive Spark Plug Socket, 3/8"Sq Drive Female TRX-Star* Sockets; E8-E16, 3/8"Sq Drive Extension Bar, 3/8"Sq Drive Ratchet Wrench, 1/2"Sq Drive Standard Sockets; 10-32mm, 1/2"Sq Drive Deep Sockets; 16-22mm, 1/2"Sq Drive Female TRX-Star* Sockets; E18 - E24, 1/2"Sq Drive TRX-Star* Socket Bits; T55, T60, 1/2"Sq Drive Spark Plug Sockets, 1/2"Sq Driv