California Proposition 65: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. Shaft Collar, System of Measurement Inch, Shaft Locking Type - Couplings 1 Piece Clamp, Bore Type - Collars Plain Bore, Bore Dia. 1 in, Material - Collars 303 Stainless Steel, Outside Dia. 1 25/32 in, Width 3/8 in, Clearance Dia. 1.89 in, Screw Size 5/32 In. -12, Screw Material Stainless Steel, Operating Temp. Range -40 Degrees to 350 Degrees F. This item has been restricted from sale in the following state (s): []