Ideal-Tridon Flex-Gear 43 Series Stainless Steel 300 Constant Tension Worm Gear Hose Clamp, 32 SAE Size, Fits 1-1/2 - 1-7/8" Hose ID, 40 mm - 63 mm Hose OD Range (Pack of 10) Stainless steel band for resistance to scaling and corrosion Zinc-plated carbon steel screw resists rust Inner liner covers band serrations to help prevent hose damage Belleville spring construction provides constant tension for reduced leakage in changing temperatures