The Rubi Pointing Mortar Joint Applicator Gun features a 650cc capacity and is designed for precise application of joint-pointing mortar, silicones, and polyurethanes. Its lightweight construction, reinforced with built-in aluminium, ensures smooth, efficient, and clean application of cementitious mortar joints. Engineered to improve efficiency, the Rubi Applicator Gun helps reduce mortar consumption while minimizing excess residue on tiles and brick slips, significantly cutting down on cleaning time. The adjustable pressure system, operated via a trigger mechanism, allows controlled application and safely releases internal tube pressure, preventing material waste. The RUBI manual applicator comes complete with three interchangeable plungers to suit different materials: a polyurethane plunger for cement-based mortar joints, a special plastic plunger for flexible cartridges, and a metal ring designed for rigid silicone or polyurethane cartridges.