Victory Shok TL 2 Piece 75gr Black Inserts - 12 Pack - The Shok TL 7075 aluminum alloy/stainless steel construction broadhead adapter for extreme FOC has an impact protection sleeve that strengthens arrow tip from fracturing. Increases impact resilience and durability, has a taper locking machining to improve strength and concentricity. Adapter accepts a standard 5/16” broadhead with an 8-32 thread. Shok aluminum/stainless steel insert VAP/TKO/VAP-SS .166 75gr