Pump-Up Sprayer With A 48 Oz. Tank Capacity Features An Ergonomic Thumb-Lock That Makes It Easier To Spray For Fatigue-Free Spraying. Metal Plunger Provides Increased Durability Through Repeated Use. Compact Size Allows Easy Transportation To Various Jobs And Convenient Storage Between Uses. Durable Construction Provides Increased Chemical-Resistance With Viton Seals.