Attributes . 4 Bolt Round Flange Cartridge; 2-15/16" Bore; 7.2" Bolt Circle; 5-1/8" Bolt Spacing; 1 Piece Solid; Set Screw Mount; Cast Iron; Ball Bearing; 3-1/16" Length Thru Bore; Relubricatable; Single Lip Land Riding Seals . Names