Maximize the efficiency of magnification transitions with fluid precision using Vortex's Switchview Throw Lever. The Switchview attaches and detaches easily to the magnification ring. Constructed of skeletonized, lightweight hard-anodized aluminum, this throw lever is one tough accessory that will serve you well.SV-2 - Compatible with riflescope magnification rings with a diameter of 1.739 inches and the following Vortex riflescope models:Razor HD riflescopes with a rubber magnification ringViper riflescopes with a metal magnification ring:PST modelsHS-T modelsHS LR modelsHS modelsViper XBR crossbow scopeStrike Eagle 1-8x 24mm riflescopeSV-3 - Compatible with riflescope magnification rings with a diameter of 1.930 inches and the following Vortex riflescope models:Razor HD Gen II riflescopes with metal magnification ringsSV-4 - Compatible with riflescope magnification rings with a diameter of 1.72 inches and the following Vortex riflescope models:Strike Eagle 1-6x 24mm riflescopeSV-5...