This Lok-Down swivel set fits the Remington 870 Express. It includes the replacement cap for internal magazine tube ratchet types and the wood screw rear base. Swivels are 1" with a blued finish. Blackhawk's Lok-Down sling swivels are precision machined and assembled to exacting tolerances for maximum performance and quiet carry. Made entirely in the USA from premium steel, Lok-Down swivels utilize a positive locking mechanism designed to keep the swivel attached to your gun until you remove it.