Model Compatibility: Fits DR-6050C, DR-7550C, and DR-9050C document scanners as listed in the title. Part Number: Matches the exchange roller kit part number 4009B001AA specified in the title. Function: Replaces the pickup feed separation roller to restore equipment feeding functionality. Kit Type: Identified as an exchange roller kit for pickup feed separation in the title. Equipment Application: Designed specifically for use with DR 6050C, 7550C, and 9050C models as stated.