The Graf von Faber-Castell Perfect Pencil Black Refills (Sold Individually) is available for order on-line and in-store at Dromgoole's.
The round, short refill pencil with eraser measures 5" in length. The break-resistant lead is hardness degree B = No. 2. The refill is designed for the Design Perfect Pencil, but can also be used on its own for writing, drawing and sketching. Easy to sharpen.