One per purchase. Reverse and obverse sides shown for demonstration purposes only. 30 mm OD x M10 x 1 fine thread. A bit confusing, this isn't suitable for all E61 versions Faema has produced (since at least the year 200 or so): if your Faema (and this applies to Faema only) has a plate with three screws above the dispersion screw, you'll want to order the F_1812 instead.
Attention CA Residents: Prop 65 Warning
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.