Stamp-Ever 10-In-1 Teachers' Student Work Stamp Kit, 10 Interchangable Self-Inking Stamps, 5/8-Inch Impression, Blue/Red (4630) Stamp kit designed to help teacher's process their student's work Includes two stamp mounts - one red and one blue Contains 10 interchangeable dies to be inserted with the included tweezers into the stamp mounts Self-inking stamps re-ink automatically after each impression Stamp impression size: 5/8 inches in diameter