67% Dyneema, 33% Vectran (Patented construction). Now with new, high abrasion resistant Vectran which means less fraying in use. No creep, completely stable. Same size, strength etc. as 452X, just better.
Recommended strands: 20-24 for Compound Bows Approximate feet per pound waxed: 8,800 Spool sizes: 1/8 lb