Zig Kurecolor Twin WS is a great value, professional-quality refillable twin-tip marker which features a 6.5mm broad chisel tip and a 1mm fine bullet nib for fine details. Each marker has two color coded caps, making it easy to find the color you want without wasting time. The pens come in 135 colors and a neutral blender solution (used for creating gradual shading). These markers use an alcohol-based dye which is xylene free, quick drying, and permanent.
Kuretake : Zig : Kurecolor Twin WS Marker : Set of 12 : Basic Colors
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