STAINLESS STEEL PREFORMED BAND CLAMP IS 3/16" WIDE AND 1-3/8" INSIDE (BEFORE INSTALLATION) TO FIT MOST 5/8" AND 3/4" HOSES.  THESE CLAMPS CAN BE USED WITH BOTH CENTER PUNCH AND ROLL-OVER TYPE TOOLS. USE TWO CLAMPS WITH OUR KHN STYLE LONGER BARB FITTINGS FOR ADDITIONAL STRENGTH