Flange Block Bearing; 2 Bolt Flange Block; 1/2" Bore; 2-1/2" Bolt Circle Diameter; 2-1/2" Bolt Spacing; 1 Piece Solid; Set Screw; Cast Iron; Ball Bearing; Relubricatable; Single Lip Contact Seal

Single Row Ball Bearing; 12MM Bore; 28MM Outside Diameter; 8MM Outer Race Width; 2 Metal Shields; ABEC 1 | ISO P0; No Filling Slot; No Snap Ring; C3-Loose Internal Clearance; Steel Cage

Transmission Pulley; 1/2" Bore; 1 Grooves; 2.8" Outside Diameter; Finished Bore; 3L | 4L | A Belt Series; 2.26" Pitch Minimum; 2.6" Pitch Maximum; No Keyway

Transmission Pulley; 2 Grooves; 5.08" Outside Diameter; Bushed; B Bushing Series; A | B | 5V Belt Series; 4.4" Pitch Minimum; 4.9" Pitch Maximum; 1/2 To 2-7/16" Bushing Bore Range; Keyway