Attributes . 4 Bolt Flange Block; 1-1/4" Bore; 3-1/2" Bolt Circle; 2-1/2" Bolt Spacing; 1 Piece Solid; Eccentric Collar Mount; Cast Iron; Ball Bearing; 1-29/32" Length Thru Bore; No Relubricatable; Double Land Riding Rubber Contact Seals . Names