Panel-Mounted Battery Master SwitchPanel-mounted switches are designed specifically for panel mount applications. This range gives a very compact, versatile solution.Compact, lightweightRemovable keyCountersunk recesses for surface mount applicationStandard 2-1/16″ (52 mm) hole cut out (same as standard gauge hole)Inside: captive inserts for 3/16″ (4.8 mm) nuts providing full access for cables with no restrictionsStandard interchange label systemMolded in high temperature, fiber reinforced plasticsWARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.