1-1/2" Bore; Shaft Collar; Steel; 2-1/2" Outside Diameter; 1/2" Width; 1/4-28 X 3/4 Clamp Screw Size; Two Piece Split Recessed Screw

1-5/8" Bore; Shaft Collar; Steel; 2-5/8" Outside Diameter; 11/16" Width; 5/16-24 X 1 Clamp Screw Size; Two Piece Split

3/4" Bore; Shaft Collar; Steel; 1-1/2" Outside Diameter; 1/2" Width; 1/4-28 X 5/8 Clamp Screw Size; Two Piece Split

1/2" Bore; Shaft Collar; Steel; 1-1/8" Outside Diameter; 13/32" Width; 8-32 X 1/2 Clamp Screw Size; Two Piece Split

1-7/16" Bore; Shaft Collar; Steel; 2-1/4" Outside Diameter; 9/16" Width; 1/4-28 X 3/4 Clamp Screw Size; Two Piece Split