(332 grams)

• Lightweight composite material

Small Weight: 14 oz

• Reduces hand shock for a smoother shot

making them rugged and ready for any hunt

Altra Forward Mass System Micro Insert Weights new_hot (332 grams)The Pinnacle of Precision & Performance Altra Forward Mass System (FMS) micro insert weight system offers fine adjustment of total arrow weight to increase F. O. C. and improve down range accuracy. The micro insert weights are designed for use with all Altra 166 arrows and are stackable for infinite weight adjustment. Fitment: Altra 166 shafts Weight: 10 gr or 20 gr Quantity: 12 pk Blue Loctite recommended for assembly