The Skar Audio SK-FUSE BLK-PROANL is designed by our engineers to raise the bar when it comes to powerful inline fuse holders. With a durable zinc alloy core and premium ANL fuses from Skar Audio, this inline fuse holder is designed to enhance the protection of your powerful circuits to the maximum. The SK-FUSE BLK PROANL includes both an ANL fuse with 250 and 300 A and a 1/0 to 4 gauge reducer for additional wiring. The high quality smoke grey plastic cover attaches firmly to the base and not only provides extra protection but also a seductive look.