Used (2) Premier Mill Planetary Mixers, Model PLM5, 304 Stainless Steel. 5 Liter(1.3 gallon) total capacity, 3 liter(.08 gallon) working capacity. Jacketed mixing can approximate 8-1/2" diameter x 5-1/2" deep. (1) working mixer built 2008, and (1) mixer for parts built 2005.