PN#23556 SKU#1437 Channel Mount Lock Set (5/8″ Diameter). Material: Blank. Finish: Chrome. Replaces one of the adjustable channel-mount pins for increased security. Fits any CURT adjustable channel mount. Easy-to-operate, 1/4-turn lock activation. Watertight dust caps prevent internal corrosion. Constructed from high-strength steel for reliable security. Protected by a durable chrome-plated finish. Includes four keys for added convenience.