Rear Mount - This 7-piece unit has two fully adjustable pivoting knuckles with 38 tiny interlocking metal teeth that mate with 38 teeth on the 2 upper and 2 lower arm connections. That means that every joint on the V-bar has 76 mental teeth...4 joints = 304 teeth on each V-bar. The two end knuckles are quick disconnects with black nitrided steel pins. A simple half turn will quickly remove your rods for storage. The middle bracket is machined to attach to the rear of your bow. In addition, there are calibration marks on each joint, so you can micro adjust them. This is the most versatile Heavy-Duty V-bar in the industry.