Partsam (2) 3.8" Amber Side Marker Clearance 4 Diodes light Trailer Truck Waterproof 12V Assembly Partsam ( 2xAmber ) Slim-Line Sealed LED Marker / Clearance Lights 4 Diodes 3.8" Lamps. Can be used as Side Marker, Led Marker light, Auto side Lamps, clearance light, identification light, Trailer Light etc. Applications: For Semi Trucks, Trailers, Service Trucks, Vans, Buses, Pickup Trucks, Utility Trucks, Boat Trailers, Horse Trailers, Utility Trailers, Farm Wagons etc any 12V Vehicles Two-wire design includes both lead wire and ground wire for mounting to all surfaces. Size with black base: 103mm x 34mm x 27mm (4 x 1.35 x 1 inch); size without base: 98mm x 31mm x 21mm (3.85 x 1.22 x 0.83 inch) Waterproof lens sealed light, 4 Diodes, 4" long with base. It all started in the summer of 2013 with a simple, with bold idea: make better auto parts. In other words, not just a better auto parts - a better way of doing things. A new kind of auto company that works hand in hand with users to do something amazing, something meaningful. Now PARTSam has grown tremendously to become one of the leading platforms of e-Commerce in the aftermarket auto parts industry. Inventory Management/Warehouse &amp; Fulfillment  With our warehouse located in Milpitas, California, we take care of the inventory management for our products. This saves manufacturers space, time, and headache. Automated Multi-Channel Sales  We successfully advertise our products on multiple platforms and maintain top-rated healthy seller accounts, which keep customers drawn to our products. We are continually expanding our customer base as we add more sales channels. Professional Seller - Customers will deal directly with us in regards to issues and concerns they experience with the products. Manufacturers will not have to deal directly with the individual customers, but will experience the benefits of their business, which is the typical win-win cooperation.