Forged Chrome Vanadium steel 1/4", 3/8" and 1/2"Sq drive sockets with S2 steel spline bits. Knurled ring to assist gripping of socket with oily fingers. Supplied on socket rail. Features & Benefits: • Forged Chrome Vanadium steel 1/4", 3/8" and 1/2"Sq drive sockets with S2 steel spline bits. • 1/4"Sq Drive: 4, 5, 6mm, 3/8"Sq Drive: 8, 10, 12mm, 1/2"Sq Drive: 14, 16mm. • Knurled ring to assist gripping of socket with oily fingers. • Supplied on socket rail. • Lifetime guarantee*. • Model No. AK6214 Specifications: Model No AK6214 Brand: Premier Contents: 1/4"Sq Drive (36mm); M4, M5, M6, 3/8"Sq Drive (50mm); M8, M10, M12, 1/2"Sq Drive (57mm); M14, M16 Drive: 1/4", 3/8" & 1/2"Sq Nett Weight: 0.47kg