What's in the box: new 42A Toner Cartridge 1 Pack (Q5942A Black) This cartridge works with: Laser 4240n 4250 4250n 4250tn 4250dtn 4250dtnsl 4350 4350n 4350tn 4350dtn 4350dtnsl Printer Cartridge yield (approx.): 12,000 pages per black Count on reliable, high-quality printing and save time by avoiding common printing issues; And use our Toner Cartridges to avoid toner leaks, premature failures or dangerous code as much as possible Buy sustainable — Recycled content is included in our toner cartridges; Our Toner Cartridge is voluntarily designed and tests its printing systems to meet Eco-label emissions guidelines