The Channel Bridge T-Bolt hose clamps are for the highest pressure applications. The 3/4" wide band and rigid bridge liner help prevent leaks, especially in softer hose materials. The 304 stainless steel has superior corrosion resistance, even in marine applications. Product features are screw: 10 MM hex slotted, 304 stainless steel, band: 3/4" band width, 304 stainless steel and channel bridge: 304 stainless steel.