Attwood Heavy-Duty All-Plastic Adjustable Battery Tray - 27 SeriesHeavy Duty All Plastic Adjustable Battery Tray 27 Series All plastic and heavy duty, these battery trays use an adjustable cross bar and posts to allow for universal fit of both short and tall battery styles. Contain no metal parts to corrode and no webbing straps to fade Ergonomic nuts and bolts easily secure batteries WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other