Shaft Collar, System of Measurement Inch, Shaft Locking Type - Couplings 1 Piece Clamp, Bore Type - Collars Plain Bore, Bore Dia. 2 in, Material - Collars Aluminum, Outside Dia. 3 in, Width 11/16 in, Clearance Dia. 3.313 in, Screw Size 5/16 In. -24 X 1, Screw Material Steel, Operating Temp. Range -40 Degrees to 220 Degrees F. This item has been restricted from sale in the following state (s): []