The AXCEL AVX scopes are the Premier archery scopes in the marketplace today. AVX31 - (31MM INSIDE SCOPE DIA.) AVX31 - Available configurations: TC- TConnector & Stainless #10-32 Rod SC- Stainless #10-32 Rod Top Features: -Angled LED light accessory tapped hole to direct the light to the exact center of a lens aiming dot. -Anti-glare surface texture to the inside diameter of -the scope housing to reduce glare. -Larger In-line level vile