Worm Gear Hose Clamp Band Material Stainless Steel Band Material Grade 201 Band Thickness 0.023 in Band Type Perforated Band Width 1/2 in Clamp Maximum Inside Diameter 3 1/2 in Clamp Minimum Inside Diameter 2 1/2 in Fastener Housing Material 301 Stainless Steel For Maximum Outside Diameter 3 1/2 in Grade General Purpose Maximum Operating Temperature 500 Degrees F SAE Number 48 Screw Material Steel Screw Material Finish Zinc-Plated Clamp Type Worm Gear Clamp Drive Type Turn Key