Designed as the cheapest way of getting the HP Designjet T1600 (or any other compatible printer) up and running the P2V66A cartridge is a solid purchase. Containing 130ml of grey ink, this genuine HP 730 cartridge is huge when compared to most other printer consumables on the market.The specially formulated ink within this standard capacity HP 720 grey cartridge has been designed to offer the best quality prints possible. Each P2V66A comes fully guaranteed by Hewlett Packard, meaning the purchase comes at no risk to yourself.