Curt Manufacturing 45919 Black Channel-Mount Ball & Pintle Combination Fits 2" couplers or lunette eyes with a 2 1/2" or 3" inside diameter Compatible with adjustable channel mounts #45900 or #45901 Adjustable channel mount allows for precise trailer leveling Spring-loaded locking arm for secure coupling Built-in anti-rattle helps promote quiet towing Fits 2" couplers or lunette eyes with a 2 1/2" or 3" inside diameter Compatible with adjustable channel mounts #45900 or #45901 Adjustable channel mount allows for precise trailer leveling Spring-loaded locking arm for secure coupling Built-in anti-rattle helps promote quiet towing, Protected by a durable powder coat finish