Miraclekoo AAA to AA Battery Spacers 15 Pack,clear 15 pack of AAA to AA spacers,batteries not included Materials and processes:ABS raw material injection;Made from high quality, durable plastic Quickly and easily convert AAA batteries for use in "AA" size battery applications Matte translucent effect, beautiful and appearance new Anode cap use Nickel plated copper is not easy to rust,and reduce the wastage