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 Metric, Shaft Locking Type - Couplings 2 Piece Clamp, Bore Type - Collars Plain Bore, Bore Dia. 6 mm, Material - Collars 303 Stainless Steel, Outside Dia. 16 mm, Width 9 mm, Clearance Dia. 20.8 mm, Screw Size M3, 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): []