The RAM Mount Level Cup XL with C-Size Ball Socket is the perfect accessory for most bigger insulated cups. KEY FEATURES 4-Hole AMPS pattern C-size ball socket Made of high-strength composite Includes Rubber Support Fins and Glue Tube for Rubber Fins Fits drink size: 12-32 oz Designed for more giant insulated cups, plastic water bottles, or even your reliable steel coffee cup, the Level Cup™ XL keeps your drink upright, regardless of the conditions. This kit includes a Level Cup XL with a C-size RAM® Mounts ball directly attached. The oversized opening cradles the biggest gulps, and the adjustable bottom piece moves up and down to accommodate taller cups. The rubber feet flex to fit various-sized cups as well. RAM® Mounts has refined the self-leveling action to keep your cups full. Common Beverage Sizes: 12oz Cans Water Bottles Insulated Cups 32oz Containers (Nalgene, Pelican, Contingo, Hydro Flask)