Easy to use, you can adjust the tightness by screwing the end in or out. Made of long lasting rubber and plastic. Bright red color so its easy to find if dropped.Fits: Pre-1995 SeaDoo models: GTX, GTI, GTS, GT, XP, SP, SPX, SPIPre-1995 Polaris models: SL, SLT, SLXAll boats with 1" drain plug hole