Roller Bearing Pillow Block Rebuild Kit - FUBK20 for 1 Set of Opposing Rollers for a 1.25" or 30 mm Diameter Shaft (Order 2 Sets for a DPB or TWN product)For 1. 25" or 30 mm diameter linear shafts, this kit will replace the triad of opposing rollers on a single roller bearing pillow block (SPB series). Be sure to order 2 kits for a double or twin pillow block, DPB or TWN series). The kit contains: 1 fixed side roller 1 eccentric side roller 1 top support roller 1 top roller axle 1 set screw