NIBCO 5801 ABS Pipe Fitting, Coupling, Schedule 40, 2" Hub Coupling for connecting two pipes with the same diameter in a straight run Hub ends for connecting to male unthreaded pipes or fittings ABS-DWV for chemical and corrosion resistance, performance under wide temperature ranges, and light weight for quick assembly Smooth interior finish for reduced friction and material buildup Meets specifications ASTM D2661 and D3311 for quality assurance