Feature: 1. High Speed Motor: Electric eraser adopts high speed rotating motor, which is powerful and can be easily and quickly deleted. 2. Small Light: Electric eraser for artists is small in size, light in weight, and not prone to fatigue after long term use. 3. Simple Operation: Electric eraser is easy to operate, just press the button to delete the required area. 4. Pen Shape: Electric eraser adopts pen shape design, which is easy to hold and use. It is very suitable for art painting, architectural design, school and office. 5. Scope of Application: Automatic pencil eraser is easy to use, and it is also suitable for you whether you are a beginner or an experienced artist. Specification: Item Type: Electric Eraser Kit Material: Plastic, Metal, Rubber Eraser Size:Approx. 16.6 x 1.5 x 1.5cm / 6.5 x 0.6 x 0.6in Commodity Weight:Approx. 70g / 2.5oz. Package List: 1 x Eraser Pen10 x 5mm Thick Core Replacement10 x 2.3mm Thin Core Replacement2 x Plastic Rubber Jacket1 x Metal Rubber Jacket (Installed) Note: There is no built in battery, which needs to be driven by two AA batteries.