The Milwaukee 2444-21 M12 Caulk and Adhesive Gun combinations a variable speed trigger and Max-Speed dial for improved application speed control.  The 360degree Rotating Collar allows for greatr control around turns.  The tool also features auto-reversing anti-drip, seal puncture tool and durable hang hook for versatility on the job. Powered by an M12 REDLITHIUM Battery, the M12 Caulk Gun will dispense up to 150 10oz. tubes of building sealant on one charge. This configuration is designed to work with Quart cartridge style material containers. Milwaukee also offers accessories conversion kits to change to 20oz. sausage packs (48-08-0905) and 10oz. cartridges.