• Large Security Stamper Kit includes one Secure Stamper and one Secure Marker • Both contain a special black ink that completely obscures private information, working best on black ink • Ideal for hiding personal information on mail and packages ready to be recycled • Covered information cannot be read, scanned or copied • Marker has a durable 4mm chisel nib to cover areas quickly and precisely • Stamper has a 15/16 x 2-13/16 impression size