Eheim #4014300 12mm HOSE SLEEVE. AQUARIUM FILTER

NOS (New Old Stock) Eheim 4014300 12 mm hose sleeve.  This keeps the hose from kinking when making a bend or turn, 2 per package.  The back of the package says 12/16.  This is a great score if you are in need of hard to find NOS parts for your older or out of production units.