Punches 2-5/8 IN (66.7 mm) diameter hole in metal studs for professional-looking installation of 2 IN water, vent, waste pipes. Two-speed lever action for fast, easy punching of 24 to 20 gauge thick metal studs. 2-1/8 IN (54 mm) throat width fits over most studs and channels. High strength alloy aluminum c-frame and handle provides lightweight tool for easy handling-10.6 lb. (4.8 kg).