High Point Products Beverage Holder for Tree Stand, Clamps On and Adjustable, No Tools Required Great for your travel mug, tumblers, water bottles, soda, beer, and thermos Quickly and securely clamps onto all  and 1 inch square tubing on your tree stand, no tools required, no drilling into the tree Contains beverages up to 3 and 1/8 inch in diameter Cargo hooks beneath cup holder will hold thermos, rattling horns or grunt tubes Rotates 360 degrees and locks every 5 degrees; Lightweight, durable; Made in the USA