If your Sony Mega Storage 300 or 400 Disc Explorer Door has trouble opening, odds are the belt is worn out. This is a replacement belts that can resurrect your non-functioning CDP-CX300, CDP-CX350, CDP-CX355, CDP-CX691, CDP-CX335, CDP-CX333ES, CDP-CX400, CDP-CX450, CDP-CX455, CDP-CX555ES, CDP-M333ES, CDP-M555ES, DVP-CX777ES, DVP-CX895V, or DVP-CX995V (basically any of the 300 or 400-disc players.) I have other sized belts too. See my other listings or message me for more details.
