Optronics MC91RS Clearance Marker Red Sealed Sealed Mini Marker/Clearance Light PC-rated mini thin-line light that functions as both a clearance and side marker light when properly mounted. Sonically sealed waterproof lens and housing is single unit. Kit includes A91 light chrome base and single wire plug. Grounds through mounting hardware. Attributes: Size = 2-7/8 x 1-1/2 x 1 Packaged = Clamshell Lens = Red