The Rock Exotica Rescue Eight is a traditional style figure eight with side ears to add friction. Made from durable T6 aluminum and machined from a solid block, the Rescue Eight features milled edges, and machined surfaces on both the top and bottom to ensure flat and uniform surfaces. Weight: 6.4 oz (181 gm) Height: 6 (152 mm) Width: 6.25 (158 mm) Max Rope (Single Rope): 13mm Max Rope (Double Rope): 10.5mm Breaking Strength: 22 kN