The XTrade X0900019 PRO Heavy Duty Sealant Gun has a robust construction for repeated professional use The PRO Heavy Duty Sealant Gun has been designed to take different sized cartridges of Mastic, Silicone, Caulking Cartridges in sizes from 290-410ml. This well-made gun will give a long service life due to its rigid frame construction. With a double riveted trigger and strong spring mechanism to deliver a smooth application. Features: Solid frame Can be used with 290ml, 310ml, 350ml & 410ml cartridges Extended cartridge cage reliable and smooth application Specification: Overall length: 425mm Weight: 0.7kg