• One of a comprehensive range of Premier Hand Tools, suitable for daily professional use.• Cold-forged Chrome Vanadium steel socket.• Hardened, tempered and chrome plated.• Fully polished mirror finish with knurled ring.• Socket insert grips ceramic insulation and assists in extraction of plug.• Especially useful on deep-seated plugs.• Lifetime guarantee*.Cold-forged Chrome Vanadium steel socket. Hardened, tempered and chrome plated. Fully polished mirror finish with knurled ring. Socket insert grips ceramic insulation and assists in extraction of plug. Especially useful on deep-seated plugs. For other variations of individual Spark Plug Sockets, see page XXX.• Cold-forged Chrome Vanadium steel socket. • Hardened, tempered and chrome plated. • Fully polished mirror finish with knurled ring • Socket insert grips ceramic insulation and assists in extraction of plug. • Especially useful on deep-seated plugs. • Lifetime guarantee*. • Model No. S12SP14Technical Specification:Drive: 1/2"SqM