Vibrant Performance's Stainless Steel Pinch Clamps provide you with a 360 degree seal. These One Ear Stepless Pinch Clamps feature a gap free inner band which prevents these clamps from damaging your lines. The 6.0 to 7.0mm, 7.0 to 8.7mm, and 7.8 to 9.5mm pinch clamps have a 5mm band width. All other sizes are 7mm wide.