Upgrade your micro-diameter arrows with the BALLISTA Penetrator Insert. This stainless-steel adapter weighs 150 grains and is engineered for 4.2 mm ID shafts to connect seamlessly to standard 8-32 tips and broadheads. The design delivers deeper penetration, repeatable accuracy, and a tougher front end. A protective skirt helps prevent shaft cracking on hard impacts and adds strength under side loads. Weight and balance are tuned for Ballista Sting bolts and 100-grain field points or broadheads for stable flight and tight groups. Each pack includes 12 inserts from BALLISTA.
