GRIP'R is a universal Tumbler Handle and Adjustable drink cup Holder. GRIPR Fits 12 oz - 40 oz. Sizes. 2.5" - 4" Dia. Handheld or Mounted Drink Holder. Fit's tapered and non-tapered containers 2.5" to 4" in diameter. Securely holds your favorite brand tumbler or your 12 oz, 20 oz, 30 oz, 40 oz Yeti Tumblers and Ramblers. Works as a wine bottle cup holder. Solo Cup holder and any cup size from 12 oz. to larger 40 oz. containers. Not made for mugs. Simply turn the dial to secure your favorite beverage. Comes with basic hardware to install on most surfaces. Comes with 3M Adhesive strip to mount to smooth surfaces without the use of screws or bolts. Instructions for best installation process included. GRIP'R is the only Univeral Handheld Tumbler Handle, that doubles as a Mounted Cup Holder. The GRIP'R drink holder comes with 1 locking mount that you can apply to any surface or attach to any vehicle. Great gift for the whole family. Great for the car enthusiast for their Off Road Toys. Compact setup for Truck drivers who want a custom setup. The construction worker who jumps from vehicle to vehicle, lawn management equipment, Snow removal Equipment, and any person who wants the best drink holding solution for Camping, Fishing, Boating, Hiking, Biking, ATV's, or any recreational sport. GRIP'R is The Drink Holding Solution You'll Love!