Sierra International Exhaust Hose T Bolt Band Clamp 18-720-8000 Exhaust Hose T Bolt Band Clamp I.D.: 8" or 203.2mm, diameter size: 8.42-9.08" or 213.9-230.6mm, wt. "C": 29 Designed to fit shields series 200 250 and any application below the water line Includes an extra long 1/4 inch bolt and a nylon inset locknut The band and is 316 stainless steel and is .025 thick by .75 wide. The bolt nut and trunion are 18-8 (304) stainless steel Maximum torque of 75 inch pounds