Bow Jax Jumbo String Suppressor Black. It is a long-lasting and very effective part. This part fits skinny 1/4" up to 5/16" rod. Specifications for Bow Jax Jumbo String Suppressor: Manufacturer: Bow Jax Color: Black Features of Bow Jax Jumbo String Suppressor: 1" diameter This part fits 1/4" up to 5/16" rod Black Package Contents: Bow Jax Jumbo String Suppressor Bow Jax new1061: Jumbo String Suppressor Black