Hosebinder double wrapped, HBC series center punch clamps are available in 201 stainless steel or electro galvanized carbon steel. Under conditions of high corrosion, we recommend the stainless steel clamp. Center punch clamps are double wrapped and locked with the conical punch of the HBC300/301 Tensioning Tool. To order the proper size clamp, measure the outside diameter of the hose with the fitting inserted. Select the next larger inside diameter clamp by catalog number. This listing is for each.