A must-have item for gold panning and mineral recovery, this classification screen combo set will aid your efforts by sorting raw materials based on size. These gravel, sand, and particle screens are made of tough, high-impact plastic and 304 stainless steel wire. This design is made to fit easily into a 5 gallon bucket and it matches the size of our 14" gold pans to allow easy transfer of materials from one to the other. This 1/2" to 1/100" mesh size combo set is perfect for the full range of materials classification used by gold prospectors. This set will greatly aid you in removing worthless large rocks, cleaning up gold from black sands, recovering gems, cleaning up material for use in a gravity concentrator bowl, and even preparing samples for microscopic gold recovery! Our classifiers are stack-able, so you can sort your sample into all of these groups at once for ultra-efficient panning.