The Cole Hersee Rocker Switch Bracket Mounting Kit 87167-01BP has .710" x .265" (18.0 x 6.7mm) mounting holes and it contains two bracket sections and brass stabilizing rods. Kit brackets engage with bezels. Brass rods snap into brackets to stabilize the unit. Assembled kit mounts on top of or under the panel. For installing an array of switches onto a panel, when throughmounting isn’t possible. Use in conjunction with 82159 bezels. Holds from 2 to 6 bezels (not included). Snap-together assembly: no special tools needed.