Maximize the efficiency of magnification transitions with fluid precision using Vortex’s SV-4 Switchview Throw Lever.The Switchview attaches and detaches easily to the magnification ring. Constructed of skeletonized, lightweight hard-anodized aluminum, the SV-4 is one tough accessory that will serve you well.Compatible with select riflescope magnification rings with a diameter of 1.72 inches / 44 mm such as the Strike Eagle 1-6×24 riflescope.