This is a set of 10 pink replacement erasers for the Blackwing pencils. One of the many cool things about Blackwing —they know some of us run through erasers, and designed their pencils to accommodate. It's very easy to replace them.
Note: I do not recommend using any erasers on fabric because it pulls at the fabric and can stretch it. However, if you are going to use them on fabric, use the pink eraser on fabrics that blend color-wise—like pink or orange.