316 Stainless Steel 3/4" wide Band, 18-8 Stainless Bolt and Lock Nut, Stainless Steel T-Bolt Clamps (Range 14.20"-14.77") Very strong and secure clamp for critical installations. Trident Marine T-Bolt Clamps are built with safety in mind. With a 3/4" (19 mm) wide band, this clamp ensures a greater area of coverage for a positive and strong union. It is recommended that two clamps be used on each end of a wet exhaust installation for a very long time.