Half Wire Ducting Spiral Hose Clamps- Bridge StyleBridge Clamp for Ducting Hoses300 Stainless SteelWorm Gear Band (For Clockwise Spiral Hoses)1/2" Wide Band2-1/2" 2-3/8"--2-3/4"3" 2-7/8"--3-3/8"4" 3-1/2"--4-1/2"5" 4-3/8"--5-1/4"6" 5-1/4"--6-1/4"7" 6-1/4"--7-1/4"8" 7-3/8"--8-3/8"10" 9-1/4"--10-1/4"12" 11-1/4"--12-1/4"