Mounting bracket is adaptable to fit both small and large radio switches. The Kwik-Switch & Charging Jack uses one single set screw to lock the charging plug into place. This complete switch mounting set enables you to install your battery switch in minutes, anywhere in the fuselage, by drilling one 3/16" hole. Excellent for use in planes, helicopters, boats, and cars. This attractive, black nylon switch mount is adaptable to any wall thickness up to 3/8 (9.5mm).