PL71. Tombow Mono One Eraser Holder Mini.
This handy miniature eraser from Tombow is great for precision erasingit was specially designed for smooth erasing of letters in 7 and 6 mm ruled notebooks. Features a front-twist mechanism that allows users to extend and retract the eraser as needed. Each MONO One has a stopper that prevents the eraser from rolling off your desk, and a hook that allows you to attach it to your pencil pouch or backpack.
Latex and phthalate-free. 2.9 inches long, 6.7mm in diameter. Compatible with graphite, charcoal, and pastel. Country of Origin: Japan.