An advanced alcohol-based ink formula that ensures rich color saturation and coverage with silky ink flow. The alcohol-based ink doesn't dissolve printed ink toner, allowing for odorless, vividly colored artwork on printed materials. The delivery of ink flow can be perfectly controlled to allow precision drawing. The ergonomically designed rectangular body resists rolling on work surfaces and provides a perfect grip that avoids smudges and smears. A specially designed safety cap stacks neatly and prevents damage to the nibs. One end of these markers is a fine tip and the other is a broad tip.