Expert Quality, for the installation and removal of locking wheel nuts on most vehicles (except those fitted with rotating protector shrouds). Manufactured from molybdenum steel, hardened, tempered and chemically blacked for corrosion protection. Reduce tapered internal left hand coarse thread. For use with air and electric tools. Supplied with metal case. Display packed. Contents: 4 x Sockets: 38mm long x 17.0, 18.5, 21.5, 26.0mm