​The OLO Cool Gray 8pc Brush Set offers a comprehensive range of cool gray tones, perfect for shading, blending, and creating monochromatic designs. Ideal for adding dimension, depth, and cool-toned highlights to your artwork, this set includes eight alcohol-based brush nib markers, four connector rings, and a mini blank swatch card. Each marker contains 4ml of ink—nearly double the usable ink of other alcohol markers—and utilizes a patented free-flow ink system for consistent, controlled application. The modular design allows for customization, and the markers are refillable with replaceable nibs, ensuring long-lasting use.

 Set includes:

• 8 alcohol-based brush nib markers
• 4 connector rings
• A mini blank swatch card

Colors in the set: CG0, CG1, CG3, CG5, CG7, CG9, BK Blue Black, ZERO (blender).