Shiny blue ano aluminum schrader fork cap for positive or negative air sides. Features barrel style cap design with easy grip knurl and internal rubber seal. Great for replacing lost air caps on the bottom negative air side or adding style! For RockShox Dual air forks and various other models. Will not fit certain models of Sid forks because of the air adapter for inflation. 17mm long, requires 13.5mm of exposed thread on the fork. Package includes one cap. For schrader air valves only. Please ask questions before purchasing.