2. Archery
3. Altra Arrows
4. AA-SI-00004

166 Insert/Outsert 400 Spine - 12pk

The insert secures into the arrow shaft at a depth of 0.875", while the outsert then threads directly onto the insert and encapsulates the leading end of the arrow at 0.43" creating unmatched durability. Essential rubber O-rings come pre-installed on the insert within the A.R.C.O.S., as they aid in locking the outsert in place which reduces vibration and improves concentricity between the outsert to the insert for a more precise arrow set up and down range accuracy.

Features

• Comes in 12 pk QTY • 400 Spine

• 50gn Total Weight • Accepts micro FMS insert weights