Oetiker 10500344 Zinc-Plated Steel Hose Clamp with Mechanical Interlock, One Ear, 7 mm Band Width, Clamp ID Range 35.0 mm (Closed) - 38.1 mm (Open) (Pack of 100) Clamp ear is dimpled for increased clamp force Mechanical interlock for secure closure and better corrosion resistance than a spot-weld Galvanized or zinc-plated steel band for resisting corrosion Meets DIN EN ISO 9227 for corrosion resistance 7 mm band width