Vise Grip® Cast Aluminum Pipe Wrench, 24 in, Drop Forged Steel Jaw ORS NASCO horn and battery function Low battery horn and battery function Low battery indicator—Smoke alarm will chirp in the event of a low battery Red LED—Flashes every 30 40 seconds to indicate that the smoke alarm is receiving power Dust cover Battery operated—Easy installation and continuous protection even during power outages tubing and other small cross sections of ferrous and non ferrous metals Heavy duty cast aluminum housing is 40% lighter than cast iron and easier to maneuver I Beam handle and wide design provides better weight distribution Drop forged jaw is heat treated to resist distortion or breakage Easy spin adjusting nut is heat treated for durability Hammer head design provides a flat surface for hammering