Hardened and heat treated Chrome Vanadium steel with a fully polished micro satin finish. Colour-coded for fast identification. Knurled rings assist the gripping of the sockets with oily fingers. Supplied with composite socket rail. Features: One of a comprehensive range of Premier Hand Tools, suitable for daily professional use Hardened and heat treated Chrome Vanadium steel with a fully polished micro satin finish Colour-coded for fast identification Knurled rings assist the gripping of the sockets with oily fingers Supplied with composite socket rail Lifetime Guarantee* Specifications: Guarantee:Life Model Number: AK2660