Includes head only, You can add O rings by searching item # 105896
This housing is made of ABS hard plastic material type made to accept the high water pressure but still gets craked if extra pressure is applied during pipe thread connecting or extra Teflon is applied and it causes nonvisible hair cut this is not considered a manufacturing defect or shipping damage and the warranty would cover too.
This item is a final sale, We don't accept returns or damage reports, we quality control and protect the item carefully during shipping.