Ideal-Tridon 68 Series Stainless Steel 201/301 Worm Gear Hose Clamp, General Purpose, 28 SAE Size, Fits 1-1/4 - 1-5/8" Hose ID, 32 mm - 57 mm Hose OD Range (Pack of 10) Stainless steel band for resistance to scaling and corrosion Stainless steel screw resists corrosion Worm gear mechanism for precise band adjustment Band width of 9/16 provides greater sealing area than smaller width band