Tarot Battery Tester holder

This is a Lipo Battery Tester holder suitable for Tarot model FY650, FY680, FY690S with 16mm arms diameter. You can fix the battery tester at the holder with a zip tie.
The battery tester model is:

http://www.ebay.it/itm/1-8S-Lipo-Li-ion-Fe-Battery-Voltage-2IN1-Tester-Low-Voltage-Buzzer-Alarm-LS-/161944567764?hash=item25b4a5ffd4:g:avIAAOSwX~dWlMmH