Universal Folding Adjustable Fold Up Cup Drink Holder Black Great for the workshop; mount it on a wall and your drink is within easy reach. Mount it anywhere, indoor, outdoor. The plastic construction is totally waterproof and easy to clean! Made from high quality BLACK ABS plastic. White also available. Adjustable from 2-1/4 inches wide up to 3-3/4 inches wide. Perfect for Car, truck, SUV, boat, RV, van.