Features: Made of hardened chrome vanadium steel with phosphate finish to protect from rust and corrosion Supplied in a plastic moulded case for easy storage Specification: 1/2" Drive 6 Point Deep Impact Sockets: 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24mm Impact Extension Bars: 3” - 75, 5” – 125, 10” - 250mm