RAM Level Cup XL with Torque 3/4″ 1″ Diameter Rail Base and Short ArmDesigned for bigger 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 short arm and a Torque base that accommodates round rails from .5 through 1. The oversized opening cradles the biggest of 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)Compatible Dimensions:Width Range: 2.6″ – 3.5″Height Range: 3.75″ – 11″Material:Powder Coated Marine Grade AluminumBall Size:1″ Rubber Ball “B” SizeNote:The “U” in the part number reflects product packaged in poly bag. Owner’s Manual (pdf)