THIS IS A RECTANGULAR CLEARANCE MARKER LIGHT. IT IS 4 INCHES LONG, 1 1/4 INCHES WIDE AND 3/4 INCHES IN HEIGHT. IT IS A SEALED UNIT WITH TWO 194 BULBS. IT REQUIRES A BASE WHICH IS INCLUDED FOR MOUNTING AND INSTALLATION. NEW, BULK PACKAGING. SET OF 5 (5 LIGHTS & 5 BASES).