10MM Bore; Shaft Collar; Steel; 25.4MM Outside Diameter; 9MM Width; M3 X 10 Clamp Screw Size; One Piece Split

1-1/2" Bore; Shaft Collar; Steel; 2-1/4" Outside Diameter; 13/16" Width; One Set Screw; 3/8-16 X 3/8 Set Screw Size; One Piece Solid