Carbon Express Nano-XRZ Shafts 400 1 doz.. Like the Nano-SST for recurve archers the Nano-XRZ is constructed from 30-Ton carbon that ensures faster recovery out of the bow and superior down range performance. Specifications for Carbon Express Nano-XRZ Shafts: Manufacturer: Carbon Express Color: Yellow Black Quantity: 10 Features of Carbon Express Nano-XRZ Shafts: Tri-Spine technology Constructed of 30 ton carbon Ultimate accuracy out of a compound bow Package Contents: Carbon Express Nano-XRZ Shafts Carbon Express Nano-XRZ Shafts