N-FAB's 49 and 50 Series Windshield Mounts (WSM) are the simplest way to add overhead lighting to your Jeep Wrangler JK. Featuring 3/16" Cold-Rolled-Steel Construction, N-FAB's 49 and 50 Series WSM Mounts directly bolt on to your factory A-Frame bolt locations. With these two series of WSM Mounts, N-FAB's allows you to choose whichever light bar you want - simply measuring the housing of the light bar will determine which series to buy! Coming in a Standard Textured Black Powder-Coat, N-FAB's 49 and 50 Series WSM Mounts come with a "5 Year Finish / Lifetime Craftsmanship" Warranty. MEASURE LENGTH OF LED LIGHT FROM END OF HOUSING TO END HOUSING. Total length of housing 49" to 50 3/8" use 49 Series Total length of housing 50 1/2" to 51 3/4" use 50 Series