Sierra Exhaust Hose T-Bolt Band Clamp 2-12 The Sierra 18-720-2120 Exhaust Hose is designed to fit Shields series 200, 250, and any application below the water line. Band is 316 stainless steel and is .025 thick by .75 wide Includes an extra long 14 bolt and a nylon inset locknut Bolt, but, and trunion are 18-8 304 stainless steel Maximum torque of 75 inch pounds Specifications Diameter size 2.68-3.34 or 68.1-84.8 mm Wt. C 15.6 I.D. 2-12 or 63.5 mm California Residents WARNING Cancer and Reproduc