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 2 Piece Clamp, Bore Type - Collars Plain Bore, Bore Dia. 7/8 in, Material - Collars 316 Stainless Steel, Outside Dia. 1 5/8 in, Width 1/2 in, Clearance Dia. 1.916 in, Screw Size 1/4 In. -28, Screw Material 316 Stainless Steel, Operating Temp. Range -40 Degrees to 350 Degrees F. This item has been restricted from sale in the following state (s): []