This set consists of a stainless steel sieve with four interchangeable inserts that have different mesh sizes (0.7 x 0.7 mm, 1 x 1 mm, 1.3 x 1.3 mm, and 2 x 2 mm). They allow for sifting at various thicknesses. The sieves are easily interchangeable. The entire set weighs 490 grams.