EASY TO REPLACE-- Refills are easy to replace, pinch the eraser head (metal clips), gently to pull out, and then replace the eraser refill into, and then the metal inclusions into the eraser body.

The product comes with 10 pieces of 2.3mm eraser refills and 12 pieces of 5mm eraser refills. This pack includes 2 eraser holders to hold both 2.3mm and one metal clamp to hold 5mm erasers.