Better than anyone, Bob Tyrrell knows that working with the right values leads to infinite possibilities. It's how he's redefined portrait work. Armed with his signature black and grey set, you'll have the tools you need to blend, contrast, and create work that captures life with detail and clarity. Designed with the values he uses every day and with the most advanced ink available, Bob Tyrrell's Black and Grey Set gives you everything you need to take your work to a higher level.