Altru Print40X9135-MK-AP Maintenance Kit for Lexmark MS310 MS312 MS315 MS410 MS415 MS510 MS610 MX310 MX410 XM1140 M1140 M1145 M3150 110V Includes 40X8023 Fuser, Transfer Roller & Pick Tires (3 Sets)

I was unable to remove the gear on the transfer roller to install the transfer roller holder that was easily removed from the original transfer roller. The gear on the transfer roller in the kit appeared to be glued onto the shaft and became damaged with my attempt to remove it. Reinstalled the original transfer roller - the rest of the kit works fine.