BUCK-ALGONQUIN packing boxes, complete assembly, shaft size 1-1/2", hose inside diameter 2-1/2". A complete assembly includes 2 clamps, nut, spud & body are finely machined cast bronze. Hose is 5-ply marine exhaust hose. Clamp is all stainless steel up to & incl. 1 1/4" sizes. Larger sizes have heavy duty malleable iron clamp with rustproof plating.