Linzer #6009 1/10 Barrel Ratchet Caulking Gun is used with all standard viscosity materials (silicones, acrylics, polyurethane) packaged in 1/10 gallon (10 oz) or 300ml cartridges. It is a lightweight ratchet puncture seal tool with smooth action and comfortable trigger. It also comes with spout cutter and ladder hook. It can be stored in a flat tool box or use hook on the back for hanging it on a ladder.