OfficemateOIC Office Pre-Inked Message Stamp,"Past Due", Blue, Refillable (77027) Individually packed in clear, hard sided, permanent storage boxes Storage boxes may be snapped together as desk storage system Impression size: 1/2"H x 1 1/2"W Refillable with Officemate OIC 77043 Blue Stamper Refill Ink or Officemate OIC 77044 Red Stamper Refill Ink. Prints the word "PAST DUE" in blue