Kaweco Pencil Leads - All Purpose - Mix - 5.6 mm - 3 pcs Whether stone, glass or wood, these wax-based refills write on all solid surfaces. The refills are available in different colors. This pack includes a mix of them for a more colorful writing experience. Where many other products fail or leave ugly marks, the 'Allesschreiber'* refill is a real alternative with its ability of residue-free wiping. *Allesschreiber is German and means: A pencil who can write on any solid surface.