Buyers Products Set Screw Style Pillow Block Bearings Are Built For Long Life With Simple Installation And Maintenance. The Driveline-Grade Steel Bearing Is Mounted In A Cast Iron Housing Which Helps Make The Pillow Blocks Rugged And Durable. The Included Grease Fitting Ensures Ease Of Maintenance For Continual Smooth Operation. The Simple 2 Hole Mounting Design Makes Installation Easy Even In Tight Places. Its Set Screw Design Ensures That Shaft Slippage Is Avoided.