Lights feature chromed metal bullet housing; slotted metal grille with 1/4in.wraparound side rim that completely covers lens; chromed 3/8in. high pedestal mount with hollow pigtail wire-concealing threaded mounting stud with nut. 12-volt dual-filament bulb lets you wire light as a marker or running light or as an auxiliary turn signal or auxiliary brake light. Approx. 2-1/4in. D x 2-1/4in. diam.