Experience the ultimate in precision and performance with the Altra 166 - 300 Spine Insert & Outsert - 12 Pack. This pack is the epitome of the Pinnacle of Precision & Performance™, featuring the Altra Reinforced Concentric Outset System (A.R.C.O.S.) which is designed to fit our Altra Arrows 166 Shafts. These inserts and outserts are machined from 7075-T6 aluminium, ensuring unmatched durability and performance. They offer optimal fit options, making them ideal for any hunting scenario.

The insert secures into the arrow shaft at a depth of 0.875", while the outsert threads directly onto the insert, encapsulating the leading end of the arrow at 0.43". This design ensures unmatched durability and is perfect for those seeking a reliable, long-lasting solution. Additionally, the essential rubber O-rings come pre-installed on the insert within the A.R.C.O.S., aiding in locking the outsert in place. This reduces vibration and improves concentricity between the outsert and the insert, resulting in a more precise arrow set up and down range accuracy.

Each pack comes in a quantity of 12, making it a cost-effective choice for regular hunters. The inserts and outserts are available in four sizes - 250, 300, 350, & 400 spine, catering to a variety of needs. With a total weight of 50gn, they are lightweight yet robust, and they accept micro FMS insert weights, adding to their versatility. Choose the Altra 166 - 300 Spine Insert & Outsert - 12 Pack for a superior hunting experience.

Altra 166 - 300 Spine Insert & Outsert - 12 Pack Features:

• Product: The Pinnacle of Precision & Performance™ Altra Reinforced Concentric Outset System (A.R.C.O.S.)
• Compatibility: Fits our Altra Arrows 166 Shafts
• Material: Machined out of 7075-T6 aluminium for unmatched durability and performance
• Design: The insert secures into the arrow shaft at a depth of 0.875", while the outsert threads directly onto the insert and encapsulates the leading end of the arrow at 0.43"
• Features: Essential rubber O-rings come pre-installed on the insert within the A.R.C.O.S., aiding in locking the outsert in place, reducing vibration and improving concentricity for a more precise arrow set up and down range accuracy
• Quantity: Comes in 12 pack quantity
• Size: Available in four sizes - 250, 300, 350, & 400 spine
• Weight: 50gn Total Weight
• Additional Feature: Accepts micro FMS insert weights