This is a special order item and will ship separately.
Please allow 6 - 10 business days (typically) for the item to be processed prior to shipping.
NOT FOR NEW MODELS! This part is not removable in newer models, so double check that your group has the two divots used to remove it. If uncertain at all, please contact customer service.
There is probably no reason at all to remove this part unless it is completely missing from the head, or worse, the screw broke off inside. This will require a special order tool: part MZ_UT105, as well as a new o-ring.
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.