Shrewd Onyx Bow Stabilizers 8 in Black. Internal end cap allows the use of more weights for a customized balance. Specifications for Shrewd Onyx Bow Stabilizers: Manufacturer: Shrewd Color: Black Fabric/Material: Carbon Diameter: 0.706 in Features of Shrewd Shrewd Onyx Stabilizer: Premier modulus carbon Truss Dampening Technology Internal end cap Package Contents: Shrewd Onyx Bow Stabilizer Shrewd SMSONYX08: Onyx Bow Stabilizers 8 in Black