57 Series Worm Drive Clamp 3/8" to 7/8" - 1/2" Wide Stainless Steel Hose Clamp for Automotive, Plumbing & HVAC Applications

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.