West System Six10 is a thickened epoxy adhesive that combines the strength and reliability of a two-part epoxy with the easy to use convenience of a single part formula. Cartridges feature mixing tips that ensure the right ratio of resin and hardener is automatically mixed upon application. Easy to apply with a standard caulking gun, Six10's unique non sagging formula lets this epoxy bond tenaciously to wood, metals, fiberglass, and concrete. Colorless resin and hardener. Are you working on your boat or project after work or on the weekend? Not having to mix resin and hardener beforehand saves time. Are you working overhead, on vertical surfaces, or tight spaces? This thick adhesive won't cause problems with sagging or runoff. Additional static mixing tips can be purchased separately.