FOLDING DRINK HOLDERS.These plastic drink holders have adjustable spring loaded arms (stainless steel spring) to firmly grip various size cans bottles and glasses from 65 - 80mm diameter. They are designed to mount permanently to any vertical surface as they simply fold up near flat after use - protrudes only 23mm when folded up.Manufactured from ABS plastic with a stainless steel spring.Mounting base size : 97 x 97mm-Fastening holes: 4 x 5mm C/S.Protrudes Out : 23mm when closed - 102mm when open.Holds items from 65mm to 80mm diameter.