12-Way Locking Swivel Seat Base – E-Coat FinishFeatures:6-3/4 Square x 1-1/8 High, With 4 Hole Mounting Pattern0-Degree Locking SwivelRotates 360Mild Steel E-Coat FinishWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.