These weatherproof 4-1/4" long tube reflectors slip over your existing 1/2" or 3/4" tournament flagsticks, placed 12" to 18" below the flag, providing an excellent reflective surface for any model rangefinder, at an economical cost. The large, highly reflective surface provides quick target recognition. The simple design is inexpensive, has excellent reflectivity, is easily installed without tools, does not require special flagsticks and works with any make or model laser rangefinder. Made of tough, impact-resistant material. Maintenance-free.