New Chicago Pneumatic 1/4” Ratchet Head Replacement Kit For CP826 Model, Part # CA155035. This anvil assembly includes the socket retainer and O-Ring and will work on the models below. Please feel free to let us know if you have any questions. We understand that time is money and a broken/weak tool cost you money, so we strive to ship very quickly in order to minimize your downtime. Thanks for looking and feel free to contact us for all your tool part needs. Chicago Pneumatic CP826 (T025074) 1/4" Ratchet