Completely mechanical design locks the one-piece housing directly to the band, using the full strength of the material to provide maximum anti-shear protection. There are no spot welds to rupture under stress or corrosion. And the one-piece housing cannot come apart under high loading. All Stainless Steel construction. Material Specifications Screw: 5/16” hex-head. 410 stainless steel. Band: 1/2” band width. 201/301 stainless steel. Housing: 201/301 stainless steel.