When refilling your mechanical pencil, it is essential that you select the correct diameter of replacement lead. Most mechanical pencils use .5mm or .7mm lead. We have chosen a medium hardness for all the replacement lead we offer.
If you are shopping for eraser replacements, these are very specific to the manufacturer. If one of our options looks similar to your old eraser, verify the size by looking at the specifications tab once you've clicked on the name. If you are not able to locate a replacement eraser for your pencil, you may want to consider the Tombow Zero Eraser Pencil. It's a very handy tool for those of us who make some mistakes. This separate eraser is also refillable.