Attributes . 4 Bolt Square Flange Block; 2-7/16" Bore; 8.3" Bolt Circle; 5-7/8" Bolt Spacing; 1 Piece Solid; Eccentric Collar Mount; Cast Iron; Ball Bearing; 2-7/16" Length Thru Bore; Relubricatable; Double Land Riding Rubber Contact Seals . Names