Material: steel, stainless steel Knockdown Type Size: (minimum) 7 to 13mm; (maximum) 60 to 80mm Packing: both single sizes and assorted sizes in header pouch, blister card and plastic box Customers' special designs and package specifications are most welcome Patent award: The Invention of Improved Structure Hose Clamp: Taiwan patent no.: 127878 Germany patent no.: 297 12 9872 Austria patent no.: 683206 USA patent no.: 5.787.555 With patents in over 16 countries