Description The Altra Phantom 166 Limited Fletched Arrows are premium micro-diameter arrows designed for bowhunters who need straight flight, reliable penetration, and consistent performance from the first shot. Built around Altra&&';;s proven shaft-to-shaft consistency, the Phantom 166 series adds NO SPINE Technology for exceptional tunability, a lighter and stiffer carbon construction for higher FOC and flatter trajectory, and an upgraded A.R.C.O.S. outsert system for a stronger, more durable front-end build. The slim .166 profile helps cut through wind while maintaining impact strength, and Altra Pinnacle vanes provide quiet, stable flight with dependable broadhead control. Complete with Nexum nocks, premium aluminum, titanium, and stainless steel components, and weight matching within +/- 1 grain, these arrows are built for hunters who demand accuracy, penetration, and confidence at extended 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