The flashlight mount holder fits for body diameter 25mm-30mm. Please make sure the size of the product can meet your needs before you place an order (both objects should be the same diameter). The scope mount working with flashlights/torches/telescope sights (particularly suitable for HS-802 501B 502B hunting flashlight). Wide range of uses, ideal for hunting. Very versatile mount that accommodates different diameter and lights at the same time. Hole size --- 25mm~30mm. Weight --- 90g/3.2oz. Material --- hight quality plastic. Easy on and off, does not scratch the scope, attaching a flashlight to your night vision scope. Anti-shaking design with large easily turned knob.