Made of Cast Iron, this Solid Type E 2-Bolt Pillow Block is a Non-Expansion Mounted Roller Bearing Bearing with a 3 in (3.0000 in) shaft size. Includes a Steel Set Screw Locking Insert with a Double Collar, an available Standard V-Guard Contact Seal made of Nitrile, and a Standard Painted finish, this bearing is ready for even the toughest of jobs.