Base to Center Height:2.500 ", Bore Dia:1 ", Brand:MORSE INDUSTRIAL, Expansion / Non-expansion:Non-expansion, Housing Material:Cast Iron, Housing Outside Diameter:3.125 ", Housing Overall Length:4.063 ", Insert Material:Black Oxide Coated Steel, Length Thru Bore:1.438 ", Mounting Method:Concentric Collar, Seals:Felt Labyrinth