.812" Brass Hose Ferrule (H12, R12)Once crimped, the hose ferrules provide a permanent clamping force on both the hose and fitting.Works with the Following Models:R12 1/2" I.D. Neoprene HoseH12 2/2" I.D. Rubber HoseProduct InformationDescription.812" Brass Hose Ferrule (H12, R12)Inside Diameter.812"Length1"UPC ID029292237703