Internal Material: Chrome Steel Ball Bearing 1-1/4 Inch Shaft Bearing Block SKF P2B 104-FM Pillow Block Bearing - 1-1/4 Shaft, Eccentric Collar, Cast Iron SKF P2B FM Bearing Unit Shaft Support Bearing Mounted Bearings And Housings At Edward Mozingo Blog UCP201-8 Bearing About this item If you're working on machinery or equipment that needs reliable bearing support, this FKG UCP201-8 pillow block is a solid choice. It's got that standard 1/2 inch bore size that works with so many different applications - think conveyor systems, farming equipment, industrial machinery, or even serious DIY projects. The housing is made from cast iron, which gives it that weight... External Material: cast iron 1/2" Pillow Block Bearing - #UCP 201 8 | MDS Quantity: 1Pcs UCP201-8 Pillow Block Ball Bearing