Altra Non-Micro Forward Mass System Insert Weights Weight:20gr The most durable and consistent

The most durable and consistent limb core material ever  New Axia Syntactic Foam Core limbs

Volume: 4

• Will not affect feather adhesion or flight

• Slide back and forth to test the most optimal point

Altra Non-Micro Forward Mass System Insert Weights Weight:20gr The most durable and consistentThe Pinnacle of Precision & Performance Altra non micro Forward Mass System (FMS) insert weight system offers fine adjustment of total arrow weight to increase F. O. C. and improve down range accuracy. The non micro insert weights are designed for use with all Altra arrows larger than 166 and are stackable for infinite weight adjustment. Fitment: Altra 23, Altra 27, Altra 246, Altra 204 Weight: 10 gr, 20 gr, & 50 gr Quantity: 12 pk Note: Blue Loctite