The Di LaserJet Toner Cartridge 115 MLT appears to be a variant or specific model of toner cartridge, but it seems the name may be slightly unclear. However, it seems to be referencing the HP 115A or HP 115X LaserJet toner cartridges.

Here’s some information about the HP LaserJet 115A toner cartridge, which could be what you're referring to:

HP LaserJet 115A Toner Cartridge

• Model Number: HP 115A
• Color: Black
• Page Yield:
  • Approximately 1,000 pages at 5% coverage (based on ISO 19752 standards).
• Compatibility:
  • The HP 115A toner cartridge is compatible with HP LaserJet MFP 135a, MFP 135w, and MFP 136a printers.
• Features:
  • Easy to install and replace.
  • Designed to work with HP printers for consistent, high-quality prints.

There may also be a high-yield version (HP 115X) with a higher page yield (around 2,500 pages).

If the "Di" in your query refers to a different brand or a specific line, additional details could help narrow down the search. But if you were asking about HP LaserJet 115A, I hope the information above clarifies things!