57 Series Worm Drive Clamp, 4" Hose ID, 2 1/2-4 1/2"Dia, Stainless Steel 201/301

Features: Helpful in hard to reach areas, they feature deep slotted screw design that prevents screwdrivers form slippage and puncturing the hose wall | Hex clamps can be installed with a screwdriver, nutdriver or socket wrench