ITEM NAME:20pcs 3/8"-1/2" Adjustable Stainless Steel Drive Hose Clamp Fuel Line Worm Clip.Material: 65Mn stainless steel. Steel band width: approx. Steel band thickness: approx. Wide adjustable range, torsion resistant, durable. We want to make sure you are happy with our item. Goods without RMA number will NOT be accepted.