This professional sealant gun designed for the tradesman is a heavy duty sealant gun and features a rotating barrel, smooth action trigger with high pull ratio and a non-drip device all wrapped up in a robust, sturdy gun that will handle the toughest of conditions. The cartridge is simply inserted into the gun from above and operated manually via pulling the lever handle. Ergonomic grip Smooth action extra pull trigger for easier use than most standard guns 12:1 push ratio. Rotating action carriage for easier access to difficult to reach areas such as behind taps and pipes, also makes the change of direction much easier Fits C3 310ml and C4 400ml cartridges Hook end for storing the gun and hanging from ladders and step ladders when in use