Description:This writing brush is easy to carry and suitable for both beginners and professionals. You can put water or ink into it and practice beautiful handwriting or painting with it. There are 3 brushes of different sizes in one set.Features:1, Special fiber hair, smooth and fluent drawing.2, Can fill water also can fill ink in it.3, Can be used with water soluble pencil or solid watercolor.4, Water is filled in the body, which avoid repetitive dip in water.5, Durable hair which will not shed during long time use.Specifications:Water Brush: Nylon brush tip with refillable reservoirTotal Length: 12cm(approx.)Length of Hair: Small: 1.4cm Medium: 1.6cm Large: 1.7cmPen Material: PlasticPen Head Material: Fiber hairWeight: 15 g(approx.)Package includes:3 x Writing BrushesNote:Please allow 1-3mm error due to manual measurement. Thanks for your understanding.