Feature●【Package includes】There are 2 Pcs,for DIN scuba tank valve end cap accessory part.●【Size】30*27mm.Scuba diving threaded dust plug protector cap for DIN valves work with either 200-bar or 300-bar DIN valve fittings●【Material】Lightweight, strong, portable and saltwater resistant.With swivel attachment lanyard.●【Features】The plug is vented so that the presence of high-pressure gas does not trap the plug and makes it difficult to remove.●【Application】Great replacement accessories for underwater scuba diving din first stage regulator.Description 2 Pcs Diving Dust Cap Din 1st Stage DIN Regulator Tank Valve Threaded Dust Plug Protector Cap for Scuba Tank Valve End Cap