Zig Kurecolor Twin Tip Markers, Brilliant Colors This twin tip markers is professional quality graphic marker with both fine 1-mm and broad 6.5-mm tips Ideal for graphic artists and designers The marker barrel is squared to prevent rolling off the workspace and this marker is both blendable and refillable Use it on a variety of surfaces including glass, acetates, metals, paper, photos and more This package contains 12 twin tip markers in brilliant colors