For those of you taking workshops that need the classic 12 colors around the spectrum...this kit is for you! The kit contains 12 1.5 oz cones of our Tubular Spectrum colors in mercerized cotton. The colors included in the kit are: 5 Purple, 5 Red Purple, 5 Red, 10 Red, 5 Yellow Red, 10 Yellow Red, 5 Yellow, 5 Green Yellow, 10 Green, 10 Blue Green, 10 Blue, 10 Purple Blue. Only minimal instructions are included with this kit.