This Epson T1001 Black ink cartridge contains DURABrite Ultra ink, which is water, smudge and highlighter resistant, for clear, professional results. Quick drying properties make it ideal for duplex printing. Work hand-in-hand with Epson printers to produce the best results time and time again. Compatible with Epson Stylus SX510W, SX515W, SX600FW, SX610FW, B40W, Stylus Office BX600FW, BX310FN, B40W, B1100 printers. XL Rhino inks are ideal if you print high volumes and are happy to make a bigger up-front investment to help reduce your business printing costs.