Bolt-Down Fairleads are used as shallow-angle line deflectors on boats 20' to 50'. These weight-saving fairleads are built of 6061-T6 Hard Lube-anodized aluminum for durability. Smooth surfaces and radiused center holes minimize line wear.Length: 1 7/8"Width: 11/16"Height: 1 1/8"Maximum line Diameter: 3/8"Center hole Diameter: 12mm (15/32")Weight: 0.99oz.Fasteners: Two 1/4"Maximum working load: 2,000lb.Breaking load: 4,000lb.