Tombow Mono Stick Eraser Refill

This eraser refill is compatible with the Tomobo Mono Stick Eraser. To replace the eraser in the Tombow Mono Stick Eraser, push down the top button and pull out the old eraser. Then pull off the top button, insert the new eraser into the hole, put the top button back on, and click the top button a few times to extend the new eraser.