Battery Tray with Straps for 27 Series Batteries Heavy duty Battery Tray with Strap for size #27 batteries. Includes hold down strap with a quick release buckle and four 1/4"x1" PH screws with washers. Injection molded polypropylene construction.WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.