I've been trying to open it for hours but I've only succeeded once by chance, can anyone please tell me what kind of lock is this, and the proper technique to pick it?
Thanks in advance!
https://ibb.co/g7ffeT
https://ibb.co/f2doYo
[ADMIN EDIT: Fixed IMAGE tags:]
https://image.ibb.co/k6rWm8/20180726_092917.jpg

https://image.ibb.co/ejTBm8/20180726_092856.jpg
