InkOwl HUGE Refillable Cartridge Set for HP 940, 940XL (with permanent chips) + 4 Pouring Funnels + 250ml Black Pigment Ink + 3x120ml Color Pigment Ink (OfficeJet Pro 8000, 8000A, 8500, 8500A) These massive cartridges can hold 5 times more ink than the originals so you don't have to refill very often at all. The black holds 340ml, the colors 130ml, but there is no need to fill them up completely. Includes 4 pouring funnels for added convenience: zero-mess and zero-hassle unlike traditional syringes. The unique design of these InkOwl-brand cartridges makes it super-easy to install chips from your old cartridges by simply switching the end caps. No need to risk damaging your chips like other designs may force you to. Includes a set of permanent chips. These chips are specifically designed for this type of cartridges. They will not display an ink level, but that is not a problem since the ink is plainly visible. With this approach, your printer will never harass you with ink low messages leaving you to be the decider of when to refill. This is better than cartridges with no chips, since those will cause ink low error messages to display falsely when the original chips reach zero. Product contents: set of 4 elongated refillable HP 940/940XL cartridges, set of 4 HP 940 Permanent Chips, 1 bottle of 250ml Ink Owl black ink for HP 940, 3 bottles of 120ml Ink Owl color ink for HP 940, 4 pouring funnels, 4 dust filters, detailed instruction sheet covering the whole process from start to finish. This kit contains 4 bottles of InkOwl's pigment-based formulation for HP 940 printers. This USA-made ink is proven to reliably perform on all papers including glossy. The ink is perfectly color matched to the original and is designed with the same viscosity and surface tension to assure an adequate flow through your printheads. This is not a cheap Chinese ink! The best way to avoid clogging or other print quality issues is to use a pigment-based ink in your HP OfficeJet Pro 8000 or 8500 printer.