XSWIVLROL4… Sold by the Each. The “Olive on a Stick Martini Roller! Nylon roller mounted on a steel shaft with flat spade ends. 7/8″ diameter hole by 1/2″ deep in lower panel accommodates roller. Mounting holes for #5 screws (not included) on 64 mm hole spacing. Clearance: 1/2”. Requires the separate purchase of XSWIVLHUBBAG pivot.