This AAA to AA battery adapter case converts AAA battery to standard AA battery size.
AAA to AA adapter: The upgraded solid metal contact on bottom ensures contant and stable power transmitte to your devices.
Material: high quality, durable clear plastic. Size: 1.97" x 0.54"/5.01cm x 1.37cm(Length*Diameter).
Just stick a AAA battery into the converter and it becomes an AA battery. AAA to AA battery converter is a gadget to keep close at hand, at home or at the office, etc
Package included: 18 PCS AAA to AA battery converter( Batteries are not included ).