From the product description, check product page for current description, price and availability:
1″/1.5″ Tri Clover Compatible Cap. Having several extra Tri Clover Compatible caps around is always a good idea. They are usually put in place over the open end of a valve to keep it sanitary. They can also be drilled and welded to make other fittings. .25″ thick 304 stainless.
It is in full working condition, but because this item is on clearance, there are no refunds unless defective.
As of this posting, these are on sale for $2.25. Supply is limited.
Also: Brewers Hardware has a gigantic selection of Tri-Clover Compatible Fittings including some really unique offerings