The Extreme is a versatile rotary machine designed for a wide variety of work, such as color-packing, light black and gray shading, and heavy black filling. This lightweight, balanced machine is great for everyday use. Ergonomic design; feels virtually weightless, Available with clip cord connection. Specifications: Weight: 175g Stroke Length: 3.5mm Maximum needle size: 50 mag Maximum tube diameter: 8mm 7.5 ¨C 8.5V for color packing and shading 8 ¨C 9V for lining