Durable 304 Stainless Steel Construction:The worm gear drive hose clamps is adjustable 6.9″ to 7.8″ (175-197mm), It crafted entirely from 304 stainless steel—including the band, housing, and screw—this hose clamp offers excellent resistance to rust, corrosion, and harsh environmental conditionsSecure & Smooth Worm Gear Mechanism:Featuring a precision-engineered worm gear drive design, this clamp provides strong, even tightening and a secure hold. The smooth-operating screw prevents stripping and slipping, allowing for easy adjustment and reusability without compromising grip strength.Wide Adjustable Range for Versatile Use:With a flexible and expandable size range, this clamp fits a variety of hose and pipe diameters.