Bow Jax 4 Dot Stopper Black. This Cable Guard from Bow Jax is designed to work with all 3/8 cable guard rods and is very quiet for enhanced archery focus. The Bow Jax Center Dot String Stopper works on all current 3/8 cable guard rods and uses a four dot system to center the cable guard in the center. This Bow-Jax Stopper works on all current cable guard rods and uses a four dot system to align the cable guard completely in the middle of the stopper to eliminate misalignment problems with the string. Package Contents: Bow Jax 4 Dot Stopper Bow Jax 1057: 4 Dot Stopper Black