Joes Racing 28600 Dust Cap

hi welcome to simply scoober the apex din dust cap fits onto the din section of your regulator and screws on to make sure it's a nice tight fit it prevents excess moisture or dust particles from entering the first stage of your regulator this also has an attachment point so you can attach a bit of thread keep attached to your first station you never lose it and it also has a spare o-ring just in case you need a spare one and that's the apex din dust cap