Service Bar Rail - Double Arm - 1" OD - Nickel Chrome Plated Suction cups with thumb screw fasteners for easy mounting under bar rail. 1" Chrome Plated Nickel finish. Suction cup fasteners make installation easy! Also allows removal or repositioning simple! Creates 28" wide service bar. Dimensions: 1"W x 15 1/2"H x 14 1/2"D, 1" OD tubing, Vacuum cup: 3 1/2" Diameter.