Threaded plastic cap and plugs for keeping the enviorment clean. Keep the oil in the hoses and not on the ground. These are not for pressure but to use when changing hoses or for storage or spare hoses.
10 each of sizes 4 - 16 The kit contains 120 Pieces in all.
Orders over $250.00 will be shipped UPS Ground to any destination in the United States for free, except ALASKA and HAWAII. Those two states do not qualify for free freight.