Features: 1.Durable Material: The brake screw nut cap is made of PVC material, which is durable and corrosion resistant, and can be maintained in good condition for a long time. 2.Effective Protection: Screw nut caps effectively protect screws and nuts in the brake system from dust, moisture and other contaminants, extending their service life. 3.Universal Application: The screw nut cap has a universal design and is suitable for most vehicle braking systems with wide applicability and compatibility. 4.Fast Identification: The red screw nut cap is easy to identify, which is conducive to quickly finding the screw position during service and maintenance, improving work efficiency. 5.Easy to Install: Easy to install, just put the screw nut cover over the brake screw, no additional tools are required, saving time and effort. Specification: Item Type: Brake Bleed Nipple Caps Material: PVC Inner Diameter: Approx. 6mm/0.24in Application: Universal fit for cars