Pebeo's extra fine artists acrylics pumice stone mortar 250 mL.
The mortar is made from acrylic polymer and finally crushed pumice stone, it gives it a fine grain effect, it can be used as is or mixed with acrylic colour.
This mortar can be diluted simply with water filling with gels and mediums. T
he pumice stone mortar has a semi-matte finish.