Topeak Modula Java Bottle Cage Engineering Grade Plastic/ Rubber Adjustment knob allow the cage to accept bottles with different diameters Cage length can be set up to fit a standard 12 oz. or 16 oz. Starbucks coffee tumbler sizes Fits 12 oz. and 16 oz. Starbucks style tumblers Fits height 175  240 mm, lower diameter 60  78 mm and upper diameter 75  90 mm).