Rough Country - 70513-50-inch Curved LED Light Bar Upper Windshield Mounting Brackets (GM 1500 Pickup) for Chevrolet: 14-18 Silverado 1500 4WD/2WD; GMC: 14-18 Sierra 1500 4WD/2WD FEATURES: Easy install; Features a durable black powder coat; Compatible with both Single-Row and Dual-Row Curved LED Light Bars; Compatible with Rough Country 50-inch Curved Dual-Row LED Light Bar (72950); Compatible with Rough Country 50-inch Curved Single-Row LED Light Bar (72750); Designed to work with light bars measuring 50-inches from mounting point to mounting point; Designed to work with light bars with 8mm mounting posts Requires drilling; Designed to work with 50-inch Curved LED light bars ONLY; Designed to work with light bars measuring 50-inches from mounting point to mounting point; Designed to work with light bars with 8mm mounting posts KIT CONTENTS: (2) Light mounting brackets; Gaskets; Hardware SPECS: Est. Install Time: 1-2 hours; SKU: 70513 FITMENT: 2014-2018 4WD/2WD Chevrolet Silverado 1500 Pickup; 2014-2018 4WD/2WD GMC Sierra 1500 Pickup