Brand: igus Item: Mounted spherical bearing Series: Igubal E Housing Material: Igumid G polymer Quantity per Pack: 4 Bearing Inside Diameter: 1/4in Bearing Material: Type L280 polymer Housing Type: 2-bolt flange igus igubal E series mounted spherical bearing, type L280 polymer bearing, 1/4in inside diameter, 2-bolt flange, igumid G polymer. Package of 4.