This is the lower drum disc for the TX45 drum mower. On mowers without a lift kit, it is the bottom skid disc. On mowers with a lift kit, this is the middle disc between the skid disc and the upper blade holder disc. It comes equipped with four threaded holes that can accept a lift kit plate to be attached to the bottom. It is recommended to plug the holes with threaded bolts.
Replaces part no. 8BCRIVC002A, which may show on some older parts manuals but is obsolete.