Easton Sonic 6.0 Arrow Shafts

High-performance, lightweight, all-purpose hunting arrow shafts 6mm reduced-diameter 100% carbon fiber construction Pre-installed 6 mm H Nocks (9 gr) HP 6mm Inserts (23 grains) Straightness +/- .003-inches Made in the USA                     Weight: 250 Spine   9.5  gpi  6mm HP Insert  #4 300 Spine   8.8  gpi  6mm HP Insert  #4 340 Spine   7.8  gpi  6mm HP Insert  #4 400 Spine   7.2  gpi  6mm HP Insert  #2 500 Spine   6.7  gpi  6mm HP Insert  #2 600 Spine   5.8  gpi  6mm HP Insert  #2