2 Pack Carton > Compatible Pitney Bowes 772-7 Fluorescent Red Ink Cartridge * 330ml - Same as: 772-6 * Up to 580,000 impressions using small indicia and up to 225,000 impressions using large indicia * Designed for use on Pitney Bowes DM 16K, DM 22K and DM Infinity Series * 100% Satisfaction guaranteed with quality that meets, or exceeds, USPS standards * Free FedEx Ground