California Proposition 65: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. Tapping Adapter, Tap Size 1 in NPT, Tap Square Size 21.41 mm, Compatible with Product Type TG Collet Chucks, Coolant Fed Non-Coolant Through, Features Industry Standard Erickson Single-Angle Collet System; Provides Tremendous Grip ( 3:1 Advantage) and accuracy for tapping applications; Slot in Back of Collets Acts as a Drive for the Tap Square. This item has been restricted from sale in the following state (s): []