TRI-BUILT B12 10oz Cartridge Gun with 12:1 mechanical advantage drive. Designed for standard viscosity materials packaged in 1/10 gallon or 300ml cartridges; silicones, acrylics, polyurethane, etc. Full size handle for comfortable, efficient dispensing. Half-cradle carriage securely holds cartridges and rotates for convenience. Built-in cartridge puncture wire and ladder hook pull. Double gripping plate technology for no slipping and long life. Stronger barrel to handle connection with 3-screw design. Legendary design and quality make this tool a leader in value.TRI-BUILT provides quality residential and commercial building materials that deliver professional results. By focusing on the professional contractor, TRI-BUILT has become a recognized and trusted leader in the construction industry. From roofing and siding materials, windows, coatings, and more, TRI-BUILT is a name you can trust at a competitive price.