Check the listing for details. 25 Pack SCBA Cylinder Valve Thread Protector Caps Orange. Condition: New. Listed at 99.90 USD. 25 Pk SCBA Cylinder Valve Protectors Thread Protector Caps FeaturesIncludes25 orange thread protector and nylon stringNylon StringSupplied to attach the protector to the valve and to assist in easily removing the thread protector.BonusWithstands extreme temperaturesDescription Thread protectors keep dirt, dust, mud, grit, sand, snow, ice, and water away from your LP or HP cylinder valve threads and valve orifices. Thread protectors help to prevent serious valve thread damage that can disable your cylinder just when you need it most. With valve body repairs costing as much as $250.00, thread protectors are inexpensive and sensible protection. Easy to install and remove, and provides 1/4" of plastic cushion. Prevent serious valve thread damage Easy to install Withstands extreme temperatures Thank you for your support!Gas Cylinder Source