Blue Bowl Concentrator Kit w/Pump & Leg Levelers Concentrator kit includes the blue bowl, 3 plastic leg levelers, 750 gallon per hour 12 volt pump, 3 feet of 3/4 inch flex hose, pair of battery clips, and instructions The blue bowl gold concentrator is completely portable and will quickly remove your fine gold from your concentrates. It is designed to work forever, with no moving parts to wear out or break Pre-screen your concentrates to at least 30-mesh using a classifier before adding to your blue bowl To recover micro-fines, prescreen the concentrates using a 50 or 100 mesh classifier Panning fine gold concentrates by hand is difficult and tedious. The blue bowl can recover gold as fine as talcum powder