M5 X 0.8 Bore Thread; Shaft Collar; Steel; 16MM Outside Diameter; 9MM Width; M3 X 8 Clamp Screw Size; One Piece Split Threaded

3-3/4" Bore; Shaft Collar; Steel; 5-1/2" Outside Diameter; 1-3/8" Width; 1/2-20 X 1-3/4 Clamp Screw Size; Two Piece Split

5/8" Bore; Shaft Collar; Aluminum; 1-5/16" Outside Diameter; 7/16" Width; 10-32 X 1/2 Clamp Screw Size; Two Piece Split

2-7/16" Bore; Shaft Collar; Aluminum; 3-1/2" Outside Diameter; 3/4" Width; 5/16-24 X 1 Clamp Screw Size; Two Piece Split

2-11/16" Bore; Shaft Collar; Aluminum; 4" Outside Diameter; 7/8" Width; 3/8-24 X 1 Clamp Screw Size; Two Piece Split