Draper Spark Plug Socket Set 3PC Product Overview 1/2″ Sq Dr Set Of Spark Plug Socket Set (3 Piece) Product Details Expert Quality, 6 point deep sockets forged from chrome vanadium steel hardened and tempered with a polished finish. Each socket has a knurled ring for extra grip. Fitted with rubber insert for spark plug insulator protection and retention. Contents: 1 x 10mm thread (16mm socket) 1 x 12mm thread (18mm socket) 1 x 14mm thread (21mm socket) Stock No: 16784 Part No: HT-PLUG/3
