Excalibur Matrix Survival Pack Matrix String, Rope Cocker and Stringing Aid Matrix string is constructed from BCY DynaFLight 97 material to increase string life;Matrix string increases speed, up to 380 FPS;Rope cocking aid reduces draw weight by 50%table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 3300 Product Group Code: 3300I Inactive: No