【Applications】This Caulking Gun is ideal for sealing door frames, bed frames, floor joints, and other areas, making it a versatile tool for home improvement projects. 【Customer Service】We prioritize our customers' shopping experience. If you have any questions, please reach out to us, and we will respond within 24 hours. 【Large Capacity Hopper】With a hopper diameter of 9.1 inches and height of 7.5 inches, this gun holds ample mortar, minimizing the need for frequent refills. 【High Efficiency】Equipped with two nozzles, this caulking machine efficiently fills gaps and holes while the large-capacity hopper reduces material replenishment hassle. 【Detachable Nozzle】Includes both flat and round nozzles. The round nozzle is perfect for security doors, while the flat nozzle is designed for door and window edges.