This SAE 36 flex gear hose clamp has a 5/16 inch plated carbon hex head nut and a 9/16 inch wide band. Its spring is designed to eliminate cold-flow leakage caused by fluctuating temperatures. This hose clamp has a maximum diameter of 2-3/4 inches and can be adjusted to a minimum diameter of 1-13/16 inches. It is made of stainless steel. This item is sold in multiples of ten units.