Attributes . 4 Bolt Round Flange Cartridge; 1-1/8" Bore; 3.9" Bolt Circle; 2-25/32" Bolt Spacing; 1 Piece Solid; Set Screw Mount; Cast Iron; Ball Bearing; 1-1/2" Length Thru Bore; Relubricatable; Single Lip Land Riding Seals . Names