The Laser works on all bows, providing an efficient and effective way to measure cam alignment. No more eye-balling and guesstimating if your cams are tilted or misaligned. The Laser shows instantly the amount of tilt in the cams/wheels of a compound bow. Simple to use and destined to become a standard tool for all serious archers. The Laser is enclosed in a precision machined 6061 aluminum anodized case. The unique grooved design allows the laser to project a parallel light beam from any flat surface.