Just twist a valve onto your leaky, broken sewer valve. Eliminates messy valve replacement and expensive service. Fits and accepts standard bayonet fittings. Operates like regular valve and rotates to most convenient position. Simply attach the twist-on valve to the broken valve and open the handle of the broken valve for a quick fix. Valve rotates to most convenient location Fits most standard RV's & campers for a universal match 1.6 x 0.8 x 0.8 inches Model #T58 | Valterra Twist-On Waste Valve