Amazon.com : Armory Replicas™ - High Performance Crossbow String Replacement for MK-160, MK-150, MK-120 Series – Black String, Sturdy and Reliable – Fits Multiple Crossbow Model : Sports & Outdoors
Amazon.com : Ace Martial Arts Supply Crossbow Arrows with High Impact Bolts 50-Pounds and 80-Pounds w/Free Replacement String and 2 Tips (150 LB-5 Pack) : Sports & Outdoors