Hella FF50 Driving Pattern. The body of the lamp measures 4 1/2"W x 2 1/2"H x 3 1/2"D. From the mounting surface to the bottom of the lamp is 3". May be mounted upright or pendant. From the center of the mounting bolt to the front of the lamp is 1 1/4" or 2 1/4" depending on the orientation of the bracket. The lens is tempered glass, the reflector is magnesium and the shell is ABS plastic. The mounting bracket attaches to the reflector, not the shell, so this is a very stable, very light package. Uses a 55W H7 bulb. (Thanks Rob N. for the picture)