The Ridgid Heavy-Duty End Pipe Wrench is designed with superior leverage and durability to help you tighten and loosen piping in restricted or narrow spaces quickly and efficiently when on the job. The hook and heel jaws ensure a solid grip around pipes up to 1” in diameter. With a cast iron housing, self-cleaning threads, and replaceable jaws; Ridgid pipe wrenches can endure a lifetime of use.