Supported by a tough, durable steel frame and a high quality wooden handle, the Self-inking Heavy Duty Classic Series stamps and daters are perfect for standard text impressions, as well as date stamping impressions. 2000Plus Heavy Duty Classic Series is made of 60% recycled plastic and packaged in material made from 100% recycled unbleached paper fiber. The Greenline Self-inking stamps use environmentally responsible water based inks in their inkpads, which are reinkable for extended life and less waste.