Mishimoto high Performance intercooler, watercooler, oilcooler and oil-catch cans T-Bolt Clamp Mishimoto / Stainless Steel / 73-81mm High Quality Stainless Steel T-Clamp for High Strength Applications Very sturdy Clamp for Intercooler Piping, Silicone Hoses and Exhaust Systems - Stainless steel construction resists corrosion - Locking nut keeps clamp from loosening - More durable than traditional worm clamps - Polished finish increases engine bay aesthetics Width: 20mm Clamping range: 73 - 81mm Installation Torque Specs: 3N*M recommended for all t-bolt and constant tension t-bolt clamps. These clamps have an operating range of 2-4N*M. Do not exceed the maximum torque rating of 4N*M. Material: Stainless Steel Clamping Ability: 73mm to 81mm Mishimoto T-Bolt Clamps are constructed from rust-proof stainless steel and offer improved durability over traditional worm gear clamps. Equipped with a self-locking nut, you can be sure that everything will stay in place when using the Mishimoto Stainless Steel T-Bolt Clamps.