Rattler Rope Company Stricker 28' 9.0, 9.5, 10.0, 10.25, 10.5, 10.75 The Striker calf rope is a revolutionary product It features a CoreTech core and four strands The Striker's patented four-strand Coretec construction delivers stability and a better balanced feel, with a larger sweet spot in the loop. This means more clean, tight, and fast catches. Even with less than perfect delivery. The smaller crowns around the core, makes this the fastest, smoothest, calf rope ever made. 28ft.