Kit comes with 6 most common cap & plug sizes #4 (7/16-20), #6 (9/16-18), #8 (3/4-16), #10 (7/8-14), #12 (1 1/16-12), #16 (1 5/16-12).
These JIC 37° caps and plug fittings conform to SAE J514, and are excellent for hydraulic fluid power and fuel delivery applications.
52 Total pieces of caps and plugs, comes in a sturdy ergonomic carrying case.