Hi-Tech Duravent Stainless Steel Hose Clamp, 5/16" Band Width, 1-1/4" - 2-5/8" Hose OD Range Type 304 stainless steel band helps provide resistance to corrosion Stainless steel screw resists corrosion Bridge clamp helps provide a tight seal for wire duct hose Worm gear mechanism for precise band adjustment Band width of 1/2" for secure sealing area