lndustrial grade for maximum bonding strength. The thin version wicks into tight places where flowing into and under is essential. Medium and Heavy are for semi-smooth surfaces. Gel viscosity is for filling and bonding porous surfaces. Non whitening activator accelerates your curing time. De-bonder removes unwanted and excess glue. Glue any combination of wood, naugahyde, plastic, veneers, cardboard, rubber, ceramics, leather or vinyl. No clamping, instant set. Excellent for repairing wind-shake and pits in white wood. Mohawks new Aerosol Activator is an easy to use, more economical method to activate Instant Adhesive.