Mathews' Silent Connect System (SCS) enables you to attach their exclusive Mathews bow rope and sling in the field quickly and silently. The 2020 VXR is compatible with two threaded attachment points between the limbs. The SCS kit is only compatible with the new VXR. The kit includes two SCS posts (top and bottom limbs), one Mathews exclusive bow rope, and four set screws. The bow rope is 30 feet in length and is made of durable 550 lb. paracord.