General description Sealey Siegen Socket Set 1/4", 3/8" & 1/2" Sq Drive includes 171 pieces, designed for professional use. This comprehensive socket set is manufactured from hardened and heat-treated Chrome Vanadium steel, ensuring durability and longevity. The set features a fully polished mirror finish and covers sizes from 4 to 32mm. It includes 72-tooth comfort grip ratchet wrenches, spark plug sockets, extension bars, socket bits, a spinner handle, and various accessories, all supplied in a tough, durable storage case. Technical specifications Model No.: S01211 Material: Chrome Vanadium steel Socket sizes: 4-32mm Contents include: 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: Slotted (4, 5.5, 6.5, 7mm), Phillips (#0, #1, #2), Pozi (#0, #1, #2), TRX-Star* (T8-30), Security TRX-Star* (T8H-T30H), Hex (3, 4, 5, 6mm) 1/4" Sq Drive Extension Bars: 50mm, 100mm 1/4" Sq Drive Ratchet