Smith Performance Sprayers R301 3-Gallon Concrete Sprayer for Professionals Using Water-Based Cleaners, Sealers, Release Agents and Curing Compounds Professional grade sprayer and components for maximum resistance to water-based concrete chemicals Brass, 24 inch wand containing a no-drip valve stem and shut off with the highest quality Viton seals for maximum chemical resistance Highly efficient pump requires 25% fewer pumps per gallon than leading competitor Faster, easier repair - pump seals can be changed within minutes without tools, which equals less downtime Pressure release valve allows you to safely remove internal pressure prior to opening the tank This is an O.E.M. part