Victory .166 Shok TL 2-Piece Inserts VAP/TKO/VAP-SS 50gr 12 Pack Grey. 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. Specifications for Victory .166 Shok TL 2-Piece Inserts VAP/TKO/VAP-SS: Manufacturer: Victory Additional Features: Small Diameter Carbon Features of Victory Shok TL 2-Piece Inserts: Shok aluminum/stainless steel insert VAP/TKO/VAP-SS .166 75gr Package Contents: Victory Shok TL 2-Piece Inserts Victory ACISHOKVL-12: .166 Shok TL 2-Piece Inserts VAP/TKO/VAP-SS 50gr 12 Pack Grey