The Pro Plumbing Tool Set includes the Crescent Self-Adjusting Pipe Wrench, the Crescent Aluminum Pipe Wrench, the Crescent Z2 Pliers, and the Crescent Z2 Auto-Bite Pliers. The Crescent Self-Adjusting Pipe Wrench features a unique head design that instantly grips and releases pipes and other types of fasteners with a fast ratcheting action. The Crescent Aluminum Pipe wrench is perfect for numerous plumbing and MRO applications. The Crescent Z2 line of pliers is Crescent's most advanced range of professional pliers. The Z2 line of pliers offer the professional the best grip and cut-day in and-day out. Last but certainly not least, The Crescent Z2 Auto-Bite line of one handed adjust tongue and groove pliers is Crescent's most innovative range of professional grooved joint pliers.