The Brother PRK-A3001 is a roller replacement kit for standalone document scanners. The pack includes: Separation Roller x 1, Pick-up Roller x 2, Brake Roller x 1 The Brother PRK-A3001 accessory is recommended for use with the ADS-2200 and ADS-2700W document scanners only. The roller life is rated at 100,000 sheets and is recommended to replace all rollers at the same time once reached. Key Features Roller replacement kit for ADS-2200 and ADS-2700W document scanners Pack includes: Separation Roller x 1, Pick-up Roller x 2, Brake Roller x 1 Roller life rated at 100,000 sheets The Brother PRK-A3001 is a roller replacement kit for the ADS-2200 and ADS-2700W standalone desktop document scanners. It is recommended to change all rollers at the same time once the life of 100,000 sheets has been reached.