Trident Marine 316 Stainless Steel T-Bolt Clamp 3/4" Band - Range 8.25" to 8.69" *10-Count [720-8501]316 Stainless Steel T Bolt Clamp 3 4" Band Range 8. 25" to 8. 69" *10 Count 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. These clamps can be used on any hose connection with peace of mind