Item for sale is a 3d printed transponder holder that fits Fastrak Flex toll unit (no toll transponder included with sale). Designed and printed by me after getting tired of the toll unit falling off my windshield on a hot day or having to replace the two sided tape and cleaning up the glue gunk on my windshield. It easily mounts to a vehicle windshield using suction cups provided. No need for double sided adhesive to mount your transponder to the car! No need to ever clean up glue residue left by double sided adhesive tape. This holder will only fit the transponder with a horizontal sliding switch (please see pictures). This sale is for the holder only, no transponder is included. Made with PETG filament material. Fits Fastrak Flex transponders with measurements 3.93 inch L by 1.58 inch W. A transponder will not be included in the sale, pictures of transponder are for reference only.