Attributes . 4 Bolt Round Flange Block; 3-7/16" Bore; 9-1/2" Bolt Circle; 6.7" Bolt Spacing; 1 Piece Solid; Concentric Collar Mount; Cast Iron; Spherical Roller Bearing; 4-1/32" Length Thru Bore; Relubricatable; Trigard Seals . Names