Bow Jax 4 Dot Stopper Neon Green. 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 The four dot stopper is made of a supper soft polymer that is very quiet and long lasting. Made to fit on all manufacturers 3/8string stop rods. Uses a four dot system to align the string completely in the middle of the stopper to eliminate alignment problems with the string.