COX 10 oz. PNEUMATIC CAULKING GUN PN# 61001 - Fits 10 oz. cartridge. Product Features: Air Action on Cartridge Plunger; Drawn Aluminum Barrel; True Adjustable Air Regulator - 100 PSI Maximum; Instant Dump Valve; Silencer; Quick Release End Cap; All Component Replaceable Parts; Rotating Air Hose Connector Included.