The product is a collection of vintage grease cups and oil cups that likely accompanied vintage machinery or equipment. Two unnamed grease cups with about a 3/8” femal thread attachment. One oil cup with about 3/8” male thread attachment. And one oil cup with about a 1/2” male thread attachment. Measurements are just with a measuring tape so whatever NPT thread or whatever may be different. In great shape. Even plating is good. Small oiler has small dent in cap