Master Spark Plug Socket Set & Swivel Extension. Standard Spark Pug Sockets 14mm, 9/16, 5/8 & 13/16. Extra Deep 9/16, 5/8 & 13/16. Universal Joint Spark Plug Socket 14mm, 9/16, 5/8 & 13/16. Thin Wall Spark Plug Sockets 14mm & 16mm. PLUSE FREE DSE68 8″ Dual Swivel Extension with 3/8″ Locking Drives, ideal for hard […]