54 Series Worm Drive Clamp, 2 1/2" Hose ID, 1 5/16"-3 1/4" Dia, 201/301 Steel

Features: Feature an exclusive safety collared deep slotted screw design that prevents screwdrivers from slipping and puncturing the hose wall | Combo-Hex clamps can be installed with a screwdriver, nut driver or socket wrench