| http://www.w3.org/ns/prov#value | - I still carry around a block eraser but this one is actually big enough I do not hesitate to use it like I do with my other ones.The only problem I have with it is there was no metal pin stuck in the eraser to clean out the tip but I have not had any lead break yet so it might not need it.All in all, these things are a pleasure to use.
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