These are lacquer paint thinners by Mr. Hobby. Select regular Mr. Color Lacquer thinner in either 250ml or 400ml, or choose Mr. Rapid Thinner or Mr. Leveling Thinner in 400ml. 

Mr. Rapid Thinner leads to decreased drying time and cures with a matte finish. 

Mr. Leveling Thinner leads to an increased drying time and cures with a high gloss finish.

All thinning ratios are the same for each type, thin your lacquer paint to the consistency of skim milk before airbrushing.