Daler rowney acrylic mediums special effects set daler rowney 128 900 100 the daler rowney acrylic mediums special effects set helps you create dramatic effects for fine art and crafts it contains 75ml tubes of impasto gel both matt and gloss glaze medium gloss pearlescent tinting medium and slow drying gel daler rowney acrylic mediums special effects assorted pack 5 x 75ml