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For all similar cartridges for use in a caulking gun, You need to cut the cartridge tip which is the small cone shaped section sitting atop of the threaded part. As long as you do not cut any of the main threaded part off you will be fine.

It is best cut with a sharp knife such as a Stanley knife or similar retracting blade knife. Scissors are not suitable and definitely do not use a hammer and nail.

Once you have cut the Tip you should then trim the included nozzle to a suitable size to allow the adhesive to be easily extruded.

If the nozzle is not cut back far enough excessive pressure is required to try and force the adhesive through the very small opening so it is important to trim the nozzle to a reasonable size, eg, 3mm - 5mm diameter.

Please take the time to read through our pack directions before using any product.