A tool for installation of a cable tie. The tool includes a tensioning mechanism (24) for tensioning the cable tie to a predetermined tension setting and a cutting mechanism (150) for severing an excess portion of the tail from the tensioned cable tie. The tool provides grip size adjustability (38, 40) to reduce operator fatigue, angular nose adjustability to facilitate installation of cable ties in a variety of orientations with respect to the installer's work station, and reduced recoil shock/vibration. The tool further provides rapid adjustability of the tension setting level, allows the installer to readily view the tension setting level and provides an adjustable tension setting mechanism (68) which resists damage due to impact/jarring of the tool and exposure to dirt and other environmental conditions.