2 mm, Different Bore Sizes No, Disc Material Stainless Steel.4 mm, Number of Discs 2 with Center Spacer, Center Spacer Material Aluminum, Shaft Locking Type Clamp On, System of Measurement Metric, Maximum Speed 10,000 RPM, Overall Length 101.Disc Coupling, Bore Diameter 1 40 mm, Bore Diameter 2 40 mm, Bore Type Round with Keyway, Hub Material Aluminum, Coupling Outside Diameter 79.
Mountable Shaft Collar, System of Measurement Metric with Inch Bore, Bore Type Round, Bore Diameter 1 3/8 in, Bore Thread Size Not Applicable, Collar Outside Diameter 57 mm, Inside Height to Flat Not Applicable, Clearance Diameter 62.