LockNLube grease fitting dust caps are inexpensive, extremely handy must-haves. They keep grease fittings clean, so when you get ready to grease them, you don't have to worry about clearing off a mess. They feature an attached ring collar that slides onto the fitting, keeping the cap safely attached, and the caps have a good-sized rim—not a tab, making them easy to pop open—even with gloves on. LockNLube plastic dust caps fit all standard grease fittings (SAE and Metric), and are nice and bright (available in yellow or red), so you can find the Zerks easily. Order a bag in your favorite color.