Features: Electric Eraser Refills are suitable for tenwin 8302\8305\8306 electric eraser and other brands. Comes with 30pcs Big/Thick + 40pcs Small/Thin Eraser Refills. 2 sizes of eraser refills, φ2.3mm and φ5mm erasers, 25mm length, meeting the needs of detail and local multiple highlights. Allow you to erase the targeted spot effectively and precisely, do no scratch or tear paper. Suitable for painting, architectural drawing, art creation. Easy to replace the refill. Specifications: Model: MS8313 Color: White Material: TPR Item Size: Big Eraser Refills: 5*25mm Small Eraser Refills: 2.3*25mm Package Size: 7.0 * 5.0 * 2.7cm / 2.8 * 2.0 * 1.1in Package Weight: 49g / 1.7oz(30pcs Big + 40pcs Small Eraser Refills) Packing List: 30 * Big Eraser Refills(φ5mm) 40 * Small Eraser Refills(φ2.3mm)