8pc PREMIUM Spline Socket Bit Set1/4" 3/8" and 1/2" Square DriveM4 to M16Professional heat treated Chrome Vanadium steel sockets. Fully polished black chrome finish with machined and lacquered surfaces. Steel spline bits with a phosphate finish. Knurled ring to assist gripping of socket with oily fingers. Supplied on socket railFeatures: Professional heat treated Chrome Vanadium steel sockets. Fully polished black chrome finish with machined and lacquered surfaces. Steel spline bits with a phosphate finish. Knurled ring to assist gripping of socket with oily fingers. Contents: 1/4"Sq Drive; M4, M5, M6, 3/8"Sq Drive; M8, M10, M12, 1/2"Sq Drive; M14, M16. Supplied on socket rail. Lifetime guarantee . Specification: 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" and 1/2"Sq Net Weight -0.00kg Further Information We sell a wide variety of tools and workshop equipment for both the DIY and Professional markets. Alias: ys01367 Loops 8pc PREMIUM Spline Socket Bit Set - 1/4" 3/8" & 1/2" Square Drive - M4 to M16