This Copic marker system provides the ultimate solution to design flexibility and artistic liberty. This marker is fast drying, double-ended and non-toxic marker. It is refillable, constructed in a unique design for a more comfortable grip. It can be refilled using the booster by dabbing the ink directly onto the nib or remove the nib with a tweezers for quicker filling. Features a super brush nib on one end and a medium broad nib on the other. Fit into a special airbrush system, durable polyester nibs are easily interchangeable. Electronic production guarantees consistency of both color and output. Precise and positive colored capping system provides for instant color selection. Copic markers are used by artists and designers worldwide. Available in willow color.