A Refill pack of seventy erasers for the Acurit Electric Eraser. Includes 30 Sized 5mm erasers and 40 Sized 2.3mm. The Acurit electric eraser's Product Information is further on within this description: "The Acurit battery powered eraser is a versatile high-powered eraser the perfect tool for any office, studio, or home. Anywhere that long projects are tackled and endurance is needed. This device will save you time and lessen hand and wrist fatigue, Allowing you to focus your energy on your work and not on random hand cramps. You only need to apply light pressure when working with this tool. The Standard 5mm eraser can erase large and smAll areas with ease. To accurately remove fine Details, you can effortlessly switch to the 2.3mm eraser by inserting the Included plastic chuck adapter. The Acurit Electric Eraser comes with a rechargeable 600mAh battery, USB charging cable, and 16 eraser Refills. This exceptional tool is the perfect addition to your artistic arsenal and is an excellent gift for the artist or illustrator who has everything." We're so sure you'll be impressed with the Quality of this Item, that we are offering a 90 day warranty to ensure your satisfaction.