For sale is a Chicago Pneumatic Tool Heavy Duty Air Impact Wrench. Driver spline is 1-5/8" diameter (across the outside of the teeth), and has (14) spline teeth. Unit is marked: TA 3474 / BA531046. The OEM data plate is damaged, and I cannot read any other information off of this tool. NOTE: I performed a basic air test, and this Impact Wrench appears to be running correctly. The spline driver is in excellent condition with no damage to any of the teeth or on the flat.