Mixing arms and other important metal components of stainless steel.; Box Includes: o 1 - BioLet 30 NE Composting Toilet o 1 - 8 gallon bag Starter Mulch o 1 - Auxiliary compost bin o 1 - Winterizing plug o 1 - Manual mixing rake o 5 - 2' sections ... Centrex Composting Toilets ...