Contains a complete range of SAE and metric-sized sockets and 1/4 in, 3/8 in and 1/2 in drive tools forged from high-quality steel and finished in high-polish nickel chrome or black chrome. Ratchet handles are ergonomically designed and have an easy-to-use, thumb-operated reverse-switch mechanism. Sockets and extensions remain locked onto the drive until disengaged with an easy-to-reach, low-profile quick release button. Stanley sockets feature "Max-Drive" design, a unique radius corner design which helps reduce fastener wear by minimizing contact on the outer 5% of the fastener, helping to increase life expectancy and helps reduce slipping on frozen or rusted fasteners. Meets and often exceeds ANSI specification. Includes (18) 1/4 in drive sockets, (1) 1/4 in drive extension bar, (1) 1/4 in ratchet and a blow molded carrying case.