Base Diameter 3.5 Inches 2 Inch Diameter Ball 360 degree Rotation.
ACCEPTS ANY STANDARD CB SPRING OR WHIP BALL MOUNT W/LUG CONNECTOR Mounting Plate 3/8 x 24 Threaded
ACCESSORIES UNLIMITED - HEAVY DUTY CHROME SWIVEL BALL MOUNT WITH 3/8" X 24" THREADS & LUG CONNECTIONS
WARNING: CHOKING HAZARD -- Small parts. Not for children under 3 yrs.
Warning: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. www.p65warnings.ca.gov