The Axcel AVX-31 Rheostat Cover and Torque Indicator combo includes both the Rheostat Cover and Torque Indicator. The Rheostat Cover slides over the AVX-31 scope housing before the interchangeable Ring Pin to offer fiber optic coverage adjustment. The cover allows brightness to be dialed in perfectly and easily changed for all lighting conditions. The Torque Indicator is designed to reduce torque and secure the sun shade.