Base to Center Height:2.500 ", Bore Dia:0.500 ", Brand:AMI BEARINGS, Expansion / Non-expansion:Non-expansion, Housing Material:Thermoplastic, Housing Outside Diameter:2.563 ", Housing Overall Length:3.891 ", Insert Material:Nickel Coated Steel, Length Thru Bore:1.220 ", Mounting Method:Set Screw, Seals:Double Lip Contact