The Park Tool CTP-4K Chain Tool Pin Kit includes four (4) replacement chain tool pins and one 5/32" ball bearing.
To replace the chain tool pin, unscrew the cap, and pull out the old pin. Take care not to lose the ball bearing beneath the pin. Install the new pin and replace the cap.
Works with the CT-4.3, CT-4.2, CT-4, and CT-11
Manufacturer's Part Number: CTP-4K