Description The Altra Phantom 166 Limited Fletched Arrows are high-performance micro-diameter arrows built for bowhunters who want straight flight, deep penetration, and dependable consistency right out of the box. Known for exceptional shaft-to-shaft consistency, Altra improves the Phantom 166 lineup with NO SPINE Technology for superior tunability, a lighter and stiffer carbon layup for higher FOC and flatter trajectory, and an upgraded A.R.C.O.S. outsert system for a stronger, cleaner, and more durable front end. The .166 micro-diameter profile helps reduce wind drift while maintaining impact durability, and Altra Pinnacle vanes provide quiet, stable broadhead control in flight. Finished with Nexum nocks, premium aluminum, titanium, and stainless steel components, and weight-matched consistency within +/- 1 grain, these arrows are built for serious hunters who demand accuracy, penetration, and reliable performance at longer ranges. Specs Grains Per Inch 250 - 9.8300 - 8.5340 - 8.0400 - 7.1 Factory Length 32" Components Included Phantom A.R.C.O.S. Insert/Outsert system and nocks Manufacturer Warranty Limited