Premium versatile acrylic-based hybrid paint markers that work on almost any surface for all techniques. Patented capillary system for the perfect paint flow coupled with the Flowmaster pump valve for active paint flow control makes these markers stand out against other brands. All markers have refillable tanks with mixing balls. Secure caps click closed to avoid drying out and to protect exchangeable tips. Use refill colors to mix custom colors or use with other artist tools (airbrush sponges brushes etc.).