The Programmer MX500 model is compatible with the MX363U, 453U, 503U, and 4528U printers.Weighing 310g and colored black, this developer is designed for stable performance across several models, including MX 500, 503, 363, 464, 502, 3508, 3158, 354, and 5658.Each product is rigorously tested for quality and securely packaged to prevent leakage or damage during transportation.Packaging may vary due to production changes, but this does not affect the product's usability.