Pads are suitable to fit numerous Trodat Professional models including 5200 5430 5431 5030 5546 5435 and5430L Rubber Stamps. Pack are supplied in multiple packs of two The ink is manufactured with a water base and contains no toxic substances no acid no formaldehyde and no heavy metals. The ink is hygroscopic meaning that it self regulates by absorbing the humidity of the surrounding air so that it does not dry out allowing prolonged usage. The 650 replacement ink cartridge is available in bl...