WIDE APPLICATIONS: Easily adjust to hold almost any bottle or cup with a bottom diameter less than 83mm. EASY TO INSTALL: Includes 8 stainless steel screws and double sided tape strips . SMALL SIZES: Folds flat to protrude only 28mm when closed, 92mm when open. PREMIUM MATERIALS: The construction in plastic is completely waterproof and easy to clean. EASY TO USE: The cup holder can be mounted on any flat vertical surface. 【Scope of application】It is often used in cars, RVs, ships, yachts, etc., and can also be installed in wheelchairs, carts, etc. Description Product Description Package Includes: 2 x Black Adjustable Glass Holders 8 x Stainless Steel Screws Product features: Onboard storage practical and corrosion resistant for your drinks (mugs, cans, etc.) can hold cups or cans with a diameter of less than 83 mm. Brackets with bands or screws < p>Folds down for compact storage Comes in black color