The heavy duty® metal gear box delivers an industry leading 950 lbs of pushing force for the highest viscosity materials. The M18™ adhesive gun kit offers both a remote speed dial and a variable speed trigger that optimizes the users control over bead and flow rate. Milwaukee's industry leading motor and electronics technologies have created a new constant flow technology that allows for a steady flow rate at 0-21 ipm throughout use of the adhesive gun. The anti drip clutch instantly stops material from expelling after trigger releases and saves the user time and money avoiding a messy clean-up. A rotating quick change collar increases the ease of use and the ability to change out adhesives quickly and without clean-up. The 2642-21CT accepts all Milwaukee® quick change front ends and all M18™ batteries. The Milwaukee® REDLITHIUM™ batteries increase run time allowing a user to dispense over 200 tubes of general construction material on a single battery charge.