Spectre Magna-Clamp 5160 is designed to fit 1-1/2 inch inside diameter as well as AN-28 radiator hose that has a maximum outside diameter of 2 inches including any covering. The stainless steel gear drive clamp features a two-piece red and blue anodized aluminum housing that provides secure tightening at an affordable price. Magna-Clamps are designed to perform as well as they look and are ideal for race, street, and show.