General description The Extruder Gun Stainless Steel Mortar Grout Gun is a high-end caulking gun designed for efficiency and durability. Made from high-quality thick stainless steel, it features a new piston made of rubber that enhances suction power, making it ideal for grouting floor tiles and handling various types of mortar, including epoxy. Technical specifications Gun body dimensions: 660 x 140 mm Round nozzle diameter: 9-20 mm Flat nozzle dimensions: 58 x 14 mm Wide flat nozzle dimensions: 52 x 19 mm Usage Particularly suitable for grouting floor tiles. Can handle ordinary mortar and epoxy. For optimal results, ensure the correct proportion of sand and cement to avoid deformation. For easier extraction, use a 45-degree angle instead of vertical. After use, remove the handle and nozzle, soak in water for 10 minutes, and apply a few drops of oil for easy reuse.