The Improved Repair Tool is the special secondary "weapon" used by the Technician class in the game Tribes: Ascend. Unfortunately, this means that a Technician only carries a single 'damage' weapon under most circumstances.
The Improved Repair Tool repairs at a 20% faster rate than normal repair tools, and can be upgraded to increase that rate in 15% increments, to a maximum of 65%. With the Mechanic perk it can be used to damage base assets, but this is rarely useful. Using Mechanic, the Improved Repair Tool deals about 210 damage per second to Base Turrets and Sensors, taking 24 seconds to destroy a turret with no upgrades (5000 health). It takes about 30 seconds to destroy a generator at 166 dmg/sec. The repair rate upgrades for this weapon and Mechanic do not seem to increase the rate of damage.