1 13/16″ – 2 3/4″ diameter, 1/2″ width, soft-touch harsh environment worm-drive hose clamps, SAE 36. Made completely from stainless steel, including the 5/16″ slotted hex head screw. Use these soft-touch worm-drive hose clamps with soft hoses and tubes. An integral smooth inner liner covers up the fastening slots that can cut into soft hoses. There are no bumps under the housing to jeopardize the concentricity of the seal and no laminated coverings to disintegrate under heat, ultraviolet, or corrosive attacks.