Stainless steel screened classifiers comes in nine different sizes. 13 1/4" diameter fits perfectly on most five gallon buckets. Stackable to get several different sizes at once. Used for gold prospecting, gem and mineral hunting, sifting grains, sorting, and a variety of other uses. 13 1/4" Diameter so they are stackable on a bucket. Choose from 9 mesh sizes: Wire thickness: 0.10 mm—Mesh size: 1/100" Wire thickness: 0.14 mm—Mesh size: 1/70" Wire thickness: 0.17 mm—Mesh size: 1/50" Wire thickness: 0.30 mm—Mesh size: 1/30" Wire thickness: 0.35 mm—Mesh size: 1/20" Wire thickness: 0.45 mm—Mesh size: 1/12" Wire thickness: 0.60 mm—Mesh size: 1/8" Wire thickness: 0.95 mm—Mesh size: 1/4" Wire thickness: 1.40 mm—Mesh size: 1/2" Product Uses and Features: Classification is the most important step in gold recovery. Screen off large, worthless gravel and rock. Size your material to the proper dimensions of the gold you are expecting to recover. High quality stainless steel wire mesh is both accurate and durable for everyday use. The plastic is both lightweight and durable. Resting the pans on top of each other takes up less space. Differently sized mesh screens make classifying even faster. This pan fits perfectly on top of a 5-gallon bucket.