Solo 416 Replacement Shut-off Valve is made with high quality and durable materials so it is proven long-lasting. Features a positive lock-on and lock-off for safe and convenient use. It fits all Solo manual sprayers except one-hand sprayers, 400-1G, 405-N, and 405-B. It is hassle-free to install and operate plus, it keeps your Solo sprayer operating like it is new. Screw to wand and sprayer with a hose barb, screw cap and O-ring to fit.