The Excel Crossbow String is machine made to achieve high arrow velocities with maximum reliability. This string will fit all older Exo series crossbow models with magtip limbs such as Equinox, Exomax, Phoenix, Vortex, Axiom SMF, Ibex SMF, Vixen, Exocet, and Eclipse. Does Not Fit: All Matrix, Bulldog, Micro or Dual Fire Series Crossbows Excalibur Excel String Blood Red 1994BR