superior clamp Sizes: From 3/8 to 7 Material: Steel plated Bandwidth: 1/2 Screw: 5/16" hex head. Material: Stainless steel Steel plated Clamps are built for those applications where a high strength clamp is required. The band delivers a firm but gentle grip on tough industrial hoses such as suction and pressure hoses. These tough and robust clamps provide excellent sealing efficiency, great flexibility and conformance to shape yet good hose protection.