You will get the brand new aluminum inspection cap as pictured. The thread diameter is 1 5/8", the top of cap diameter is 1 15/16" The thread pitch is 18 tpi We combine shipping costs on multiple wins, so check out our ebay store. To get an order with combined shipping you must request and invoice before you pay. Contact us with any questions / 661-877-7911 / 661-252-1174 |