Carbon Express Nano-XRZ Shafts 700 1 doz. Black/Yellow. 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 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 51610: Nano-XRZ Shafts 700 1 doz. Black/Yellow