Designed to work with "fastener grade"material.
These tips are specially designed for less viscous materials suitable for fasteners. For use with products similar to the following: Conklin's Kwik Kaulk, Gaco Patch, Karnaflex, Uniflex One Flash, GAF butter Grade, American Weather Star 522,
Rule of Thumb - For materials that are Thicker than your normal coating or top coat, but will still pour out of pail if tipped over.
More like yogurt, less like peanut butter.