This is a Karin wood shaft twist eraser. I bought it, but I haven't had a chance to use it, so it's been sitting in my desk. I'm selling it now. The shaft is entirely made of Karin wood. It is compatible with MONO One twist eraser refills. Karin wood will age beautifully over time, so I think it will develop character the more you use it. I'm sorry, but I'm not considering lowering the price. Thank you for your understanding.