The Crescent 12" Self-Adjusting Steel Pipe Wrench is one of the most innovative plumbing tools in the market. The unique design allows for one-handed use in numerous plumbing and MRO applications. The plumbing wrench utilizes a spring-loaded jaw to allow for quicker and easier adjustments. They are 30% stronger than previous models, including a locking jaw with an extended lower jaw for increased access and quick pipe grip. They're also 20% wider for improved gripping and include an optimized handle. This wrench is ideal for most surfaces, including black iron, galvanized, PVC, and copper pipe as well as nuts, bolts, and couplings. With double the gripping power of traditional tongue and groove pliers, the Crescent self-adjusting steel pipe wrench is a great addition to the tool set.