This is the Highland Tank Bands with Stainless Steel Cam Buckles - PAIR Features: Traditional 3-slotted cam buckle made from marine grade 316 stainless steel Enlarged protective webbing lays behind the buckle to protect tank scratching Backside of webbing has integrated anchor pad, which eliminates tank slippage Designed to fit 6.9 (175 mm) to 8.0" (203 mm) diameter cylinders XS SCUBA Standard Tank Carrier For 6.9 To 8.0 Inch Cylinder have traditional 3-slotted cam buckles made from marine grade 316 stainless steel. Enlarged protective webbing lays behind the buckle to protect tank scratching."