ITEM NAME:2 Pieces Replacement Scuba Diving Tank Valve Threaded Dust Plug Protector Cap - Description: Made of rubber material,lightweight, strong, portable and anti-corrosion. Easy to install and replace. 3/4"-14NPSM. Protect your scuba tank valves with scuba tank valve protectors cap. Caps will protect the threads of you tanks when not in use or in travel. Specification: Material:Rubber Size:Length:Approx.22mm/0.87inch Inner Diameter:Approx.25mm/0.98inch Color:Black Package Includes: 2 Pieces Tank Valve Protector Caps Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks! SKU: DMO0018297454030813.Protect your scuba tank valves with scuba tank valve protectors cap. Color may be slightly different since different monitor. SKU: DMO0018297454030813.