Glue gun size: 18.2x5.7x15cm Suitable for 1:1 and 2:1 ratio cartridges and 50ml dual barrel cartridges, can be used with major adhesive brands and other standard 50ml cartridges. The glue is smooth, the connection is tight, and there is no glue leakage. Stir evenly, saving time and effort. Packing list: 1, 1:1/2:1 universal dispensing gun*1pcs. MA6-16 mixing tube and MB3.2-16S 1-1 mixing tube, 4pcs each Widely used: This 50ml dispensing gun is suitable for 50ml double barrel cartridges and can be used with 1:1,2:1 AB plastic double barrel cartridges. This dispenser gun kit is ideal for home use, decorating your favorite picture frames, scrapbooks and small non-critical maintenance jobs. Installation steps: a: Push up the metal rod behind the glue gun; b: Press the glue gun rod in and insert it completely; c: Align the position and install the hose; d: Lower the clamp. Note that when using a dispensing gun, you will also need a disposable mixing nozzle.