The Bohning Accu Laser enables you to check the alignment of bow string, limbs, wheels, cams, sight, arrow rest and arrow shaft. The Bohning Accu-Laser can be mounted in 3 different wasy: Inside the sight window With a Dovetail mounting bracket Mount Directly to the Riser Features include 360 degree laset rotation, spring loaded return, and 3-axis adjustment of components. The Accu-laser comes in a protective hard case for safe storage.