Look at my photos above to see a soft rubber insert for the outer PH200D-3 retaining nose piece. The (4) steel balls and spring are the internal wearing parts that are not part of the chuck retaining sleeve.

Brand: Snap-on
Type: Quick change air hammer chuck
Warranty: No Warranty
Unit Type: Unit
Manufacturer Part Number: PH200D
Country/Region of Manufacture: United States
Unit Quantity: 1