The DiversiTech B-8H Silver Hose Clamps, SAE No.8, 1/2 in. – 29/32 in. Diameter, partial stainless, worm drive, adjustable. 300 series stainless steel 1/2 in. band with plated 5/16 in. slotted hex head screw and housing, except the B-4H which has a 5/16 in. band and 1/4 in. nut. Recommended for most applications. 100% interlock construction features one-piece housing which directly locks into band. Spot weld free design. This product was made by DiversiTech for the DiversiTech branded items.