SX-908 – Valve stem extension up to 5′ long w/ 7-1/2″ ring – Zinc primer SX-908 Valve stem extension up to 5' long w/ 7-1/2″ ring – Zinc primer Steel valve extension with 7-1/2″ centering ring Zinc-rich primer finish Square extension tubing Zinc-rich powder coat finish Galvanized or stainless steel available Custom extensions built to order Cut Sheet Drawing Request a Quote! SKU: SX-908 Category: Steel Stem Extensions Description Description Valve stem extension up to 5′ long w/ 7-1/2″ ring – Zinc primer Related products SX-906 – Valve stem extension up to 5′ long w/ 5-1/2″ ring – Zinc primer Request a Quote!