These inks are Ranger Archival Ink crafted especially for the BetterPress Letterpress System. Theyre acid-free, permanent, and waterproofperfect for making your letterpress projects pop! Just follow the BetterPress instructions to achieve stunning, detailed prints. The Happy BetterPress Ink Mini Set features four vibrant 1.25 x 1.75-inch ink pads in Magenta, Malachite, Sapphire, and Iris, plus a Clean inked press plate and Ranger Archival Ink Cleaner to keep everything fresh. Let your creativity run wild!