Carbon/Aluminim Weight for Spine Master

Are your 500 carbon shafts really .500" deflection? Now you can know for sure.

This 1 pound 3 ounce Carbon-Aluminum weight converts your Ace Spine-Master, standard AMO (ATA), scale for measuring the deflection of wood arrow shafts to the ASTM scale for measuring the deflection of carbon/aluminum shafting.