22-24 inch diameter SS Drum Clamp Quick Release - used to connect bottom of B style dust collector flanges to 55 gal waste drums. Sure lock clamping mechanism. 22-24 inch diameter SS Drum Clamp Quick Release - used to connect bottom of B style dust collector flanges to 55 gal waste drums. Sure lock clamping mechanism. Quick-Release Worm-Drive Duct & Hose Clamp 22-1/2 to 24-1/4" Clamp Range, 5/8" Band Width"