Precision Brand® Heavy Duty 3-Piece hose clamps have 9/16 inch band widths that offer greater sealing areas. They are produced as a one-piece, spot weld-free housing. Precision Brand® Heavy Duty 3-Piece Hose Clamps have a wide range of applications. They can be used for marine, plumbing, agricultural, and heavy duty industrial purposes. They are able to clamp diameters ranging from 3/8 inch to 7 inches.