General Finishes Ready To Match (RTM) Stain System for professional finishers makes color-matching a breeze. The system consists of 12 ready-to-use LOW VOC water-based stains, plus a clear base; a chip box with 96 color formulas on two-sided color chips plus stock color chips; and a formula book available in print/digital format to calculate any quantity of stain. Intermix the stains and base to design your own rich, deep wood stain colors. Brush or spray application. See our spray tip size recommendations here.