Miracle-Gro DC270MG DC140 Dual Chamber Tumbling Composter Dual compartments for more efficient use of home and garden waste Aeration system to speed up composting process Mixing Bars, which accelerate the decomposition process are included Easy to assemble, heavy duty construction Dual Chamber 2x 18.5 gal / 70 Liter / 2.47cf chambers This is an aftermarket of generic part