Heavy - made of iron for tamping down weft yarns by hand. The incised design is like those found in kilim motifs.
I bought this in Turkey, during the summer of 2002. I saw weavers using tools just like it, and even used one myself when I wove a few rows of one rug. The weight of the tool does a lot of the work for you, as you let it fall against the newly woven bits every couple of rows.