PG-40 / CL-41 Multi Pack, 2 Ink cartridges, Blister with Security
Amazon.com: Original HP 305X Black High-yield Toner Cartridges (2-pack) | Works with HP LaserJet Pro 300 M351, HP LaserJet Pro 300 MFP M375, HP LaserJet Pro 400 M451, HP LaserJet Pro 400