Features: Crafted from premium silicones, this side mount dusts cover provides robust protecting against water ingress and debris, ensuring extended lifespans for your dive gear accessories in demanding underwater environments. Its flexible yet tear resistant design maintains structural integrity during repeated use, featuring universals fit compatibility with most standard side mount cylinder valves for seamless integration. Ideal for frequent divers and technical diving enthusiasts seeking reliability equipment maintenance solution during coastal explorations, cave dives, or depth water expeditions. Performs optimally in saltwater conditions and high pressure environments, safeguarding valves mechanisms during equipment storage, transportation, and pre dive preparations. The nontoxic, silicones construction meets marine safety standards while enabling effortless hand twist installation – a practical upgrade for organized dive kits and streamlined underwater adventures. Specifications: Color:Five Choices Dimension:3cm/1.18in 4cm/1.57in 2.5cm/0.98in Component:Silicones Package Includes: 1pc gas cylinder head dusts cover note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.