2" male camlock X 1-1/2" female pipe trash pump adapter. This is an aluminum 2" male camlock X 1-1/2" female pipe aka cam and groove adapter. This camlock is used to adapt any trash pump or water suction discharge hose with a 2" female camlock to a 1-1/2" trash pump or sump pump. This camlock is great for construction, home use, or rental yard. Female end comes with a buna gasket. Now you can use two different size hose with the same trash pump or sump pump.