Keeping your trailer up to par, is an important safety protocol. Especially when it comes to a vehicle crashing into you on your one and only day out on your boat this year, due them not seeing you. Stocked with everything you need to mount them properly, you get a nice little light that could potentially save your rear, as well as others. Sonically-sealed Waterproof Break-resistant polycarbonate lens Available in either stud-mount or ear-mount styling. Pre-installed 15" pigtail Meets FMVSS/CMVSS 108 requirements when properly mounted Size: 2-1/8" x 1-1/8" x 1-1/16"