• One of a comprehensive range of Premier Hand Tools, suitable for daily professional use. • Manufactured from Chrome Vanadium steel, hardened, tempered and with a phosphate finish for added corrosion resistance. • Deep WallDrive® sockets allows a transfer of up to 30% more torque to the fixing. • Sizes: 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 24, 27, 30, 32mm. • Supplied in storage case. • Lifetime guarantee*.