The low-profile Thompson Anterior Lumbar Ring System provides effortless, Uncompromised Exposure to the lumbar spine. The versatile ring frame allows for quick, precise placement of the handles around the surgical site while providing the surgeon with an unobstructed view of the working area. New Free and Dual Angle handles allow for infinite positioning of blades. With S-Lock® Technology, add/remove blades, or switch from swivel to locked positions with the simple push of a button.