Axcel Driver Dually Wheel and Tread Tactical Bowhunting 1503625. It allows the addition of a second rubber tread to create a larger diameter wheel for easier and more precise elevation adjustments. The rubber grip enhances traction during tuning even in wet or cold conditions. This component offers a customizable option to tailor adjustment response and handling on compatible Driver sights. Specifications for Axcel Driver Dually Wheel and Tread 1503625: Manufacturer: Axcel Color: Green Features of Axcel Driver Dually Wheel and Tread: Interchangeable adjustment wheel component Accepts dual rubber treads Increased wheel diameter for improved control Rubber grip surface for enhanced traction Designed for use with Driver sights Package Contents: Axcel Driver Dually Wheel and Tread