Secure Kit - Stamp & Marker Combo - Stamp Impression Size: 1/2" x 1-5/8". Protect yourself with the Xstamper secure stamp combo. This is your newest weapon against identity theft! This combo includes the secure pre-inked stamp and the secure marker. The marker has a durable 4mm chisel nib tip. Use the Secure Marker for accuracy and use the secure stamp for speed!