Pelikan balanco fluid and thinner are used in combination for removing the errors and to rectify them. Each pack consist of 2 bottles with different colored caps. One is thiner and other is fluid.New Pelikan blanco (Fluid & Thinner). Correction fluid ansd thinner with 2 into 20 ml of 2 packs. It comes in a pelikan branded card box with 2 bottels having different colored caps indicating the usage.