In the past, similar types of chocks could only align vertically. This helped extend the life of the rope, but allowed for dangerous side loading that could lead to permanent yielding of the product causing it to become non-functional, or worse, catastrophic failure. With the Patterson Horizontal Alignment Mounting System, the SARC becomes the first truly self aligning design, as the entire unit always orients itself to the center of the line pull, both vertically and horizontally, regardless of the angle.