U.S. Optics Folding Switch View Lever Black Small. Attaching the lever to the power collar allows the shooter to quickly adjust their optics magnification by gently rotating the lever. (folding) Specifications for U.S. Optics SVL-302 Folding Switch View Lever: Manufacturer: U.S. Optics Color: Black Weight: 1 kg Length: 4 cm Width: 4 cm Height: 4 cm Features of U.S. Optics SVL-302 Folding Switch View Lever 2 Hole MGM Switch View Folding Throw Lever for TS-12X Package Contents: U.S. Optics SVL-302 Folding Switch View Lever U.S. Optics SVL-302: SVL-302 Folding Switch View Lever Black Small