PD Maintenance Kit Paintball is even more fun when your gear performs how you expect it to. The maintenance is up to you, but we have selected the best products and discounted them for you. Includes Gold Cup oil for precise lubrication, three pack of O-Rings to keep all your seals good, Wrek thread protector to protect your tank threads, Pro Flex squeegee to keep your barrel clean and performing how you expect it to.