Do you need a quick and economical way to hand mark your shipment: The Marsh Rocker Printers, stencils, and ink can mark up to 100 cartons for very minimal cost-much less expensive than using labels that only mark one box each! Use the inked Rocker Printers and attached stencil for shipment addressing, product identification.Print Area: 3 x 5-1/8 Overall Size 4-1/2 x 6