These hose clamps are 316 SS throughout including the worm gear which is always the starting point for rust and corrosion.
Low quality hose clamps are a major reason boats sink. Have you ever removed a hose clamp and with shock realized that the damned thig wasn't really holding?...enough said.
These clamps require a 7mm hex wrench. We suggest the ABA unit which we also have available here. Product ABA01
Heavy gauge 316 stainless steel, 316 is SS least prone to corrosion commercially available
Sold strap without perforation, makes a smoother grip and doesn't beat up the hose
Rolled edges,eliminates damage to hose from edge-chafe