Shaft Collar, System of Measurement Inch, Shaft Locking Type - Couplings 1 Piece Set Screw, Bore Type - Collars Plain Bore, Bore Dia. 1 1/2 in, Material - Collars Stainless Steel, Outside Dia. 2 1/4 in, Width 3/4 in, Clearance Dia. 2.25 in, Screw Size 3/8 In. -16, Screw Material Stainless Steel, Operating Temp. Range -40 Degrees to 800 Degrees F. This item has been restricted from sale in the following state (s): []