Kremer violin varnish, reddish… Kremer Walnut Hulls, cut pieces - 100g Item No. K37300 Manufacturer Kremer Kremer Walnut Hulls, cut pieces… Kremer Walnut Hulls, cut pieces - 100g Walnut hulls are the outer green shells of walnuts. In addition to the plant’s young green leaves, its bork and roots, especially the outer walnut hulls have been used as dye for coloring textiles and skin for a long time. × Kremer Walnut Hulls, cut pieces - 100g