... and higher break torque 3.Used in the connection part of oil, gas, rubber or liquid pipe British style pipe ... are galvanized steel; W4-- all of the three parts are 300ss stainless steel, housing without painted; W5-- all of the three parts are 316ss stainless steel, housing ... 92mm, 80-100mm, 90-110mm, 100-120mm. Blue head carbon steel & stainless steel M7 screw inside smooth high strength hose clamp