A thread on the American steel hose clamps are through holes, and the ancient German concave; - 2, American strip width 12.7MM, small American is 8MM, (equal to and less than 27 is a small American Other big American), German is the 9MM and 12MM two kinds; 3, hex head screw hose clamps American is 8MM, German is 7MM; 4, an American of German torque than the relatively To lower. Four points above the main difference is that the American and German hose clamps hose clamps lie, there are all stainless steel hose clamps and stainless steel half points, the price difference has everyone hose clamps at the time of purchase must pay attention!