Welcome, I wish you a happy shopping. Product: Wine Glass Holders Material: Stainless steel Color classification: silver Size: 22cm, 27cm, 30cm, 35cm, 40cm Common Problem: 1. How to choose a cup holder? (1) Measuring the length and depth of a cabinet, bar or cabinet (2) The wine rack can be installed horizontally and vertically, and the length or depth of the wine cabinet can be greater than the width of the wine rack. 2.Do you want to punch holes in advance? (1) It is installed under a wooden wine cabinet. It is not necessary to punch holes in advance. You can complete the installation by screwing the screws with the provided screwdriver. Girls can also complete it independently. (2) Iron bar hanger, please weld the bicycle hole for installation 3. How high is the shelf? What is the height after hanging the wine glass? (1) The height of the shelf is 4cm, the height after hanging the cup = 4cm + the height of the wine glass. Generally, the height of the wine glass is 15-25cm, which means that the height inside the cabinet can be more than 30. 4. What kind of wine glass is suitable for the shelf? (1) The diameter of the bottom of the glass is ≤9.3cm, the diameter of the belly is ≤10cm, and champagne glasses and wine glasses can be hung. 5. What material? (1) The cup holder is made of 5.5mm solid 304 stainless steel, does not rust, and has fine welding work without gaps. The maximum load is 10KG. 6.How long is the delivery screw? 1.7cm long screws will not be delivered as long as the thickness of the board is greater than 1.7cm To give you a pleasant shopping experience, Please check the size / color / quantity carefully when placing your order. Sorry, We are unable to change your order information after shipment. Thank you for understanding!