This valve and wand assembly comes with the newer S_445 type steam wand tip. This is an after-market version. The main differences between this version and the O.E.M. product from Nuova Simonelli is that the rubber finger protector does not have the Simonelli symbol and the swivel ball seal is rubber instead of PTFE. Oh, and the cost.
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.