Complete rigorous concrete chemical and concrete spraying applications with the 20V MAX* XR® concrete chemical sprayer (battery and charger sold separately). With up to 150 PSI of spray pressure and a 10-speed adjustable flow rate of up to.8 gallons per minute‡, DEWALT®'s best performing 20V MAX* concrete chemical sprayer† delivers the power and flow needed to help you get the job done right. This sprayer combined with the DCBp520g battery (sold separately) gives you the ability to cover up to