Slip-fit that tightly and gently holds your transponder in place Made from steel to handle extreme temperatures. Will never melt, break, or deform Industrial grade suction cup that holds through the hot and cold conditions Easily install and remove your transponder when needed. No adhesive needed. unlike other holders, it will not spin, rattle, discolor, deform, or bend The EZ Pass-Port is the best holder for an EZ Pass, I Pass, I Zoom, NC Quick Pass, PalPass and Fastrak transponders on the market. It is simply unbreakable. It is the only one on the market made from metal that will not melt or break or discolor in the heat, and designed in a way it will not interfere with the antenna signal reception and emission. It has an industrial grade suction cup that is patented to diffuse sun light and allows you to easily attach it to windshield, and remove it when needed by simply pulling on the suction cup tab that is easily accessible and conveniently located below toll pass. Easy to attach and remove, yet will never fall under any weather condition. Your toll pass is gently held so it does not rattle or spin or fall. Sale for holder only, transponder is not included. Lifetime Warranty. Made in USA.