Welcome uncle thuan! I love your avatar, I'm glad you posted photos of the wrenches in it. Thanks for all your photos. Are there any tools from north america you search for or would like to find?
That bearing puller you have is quite interesting and it looks like you have many adapters for different sized bearings. I've never seen that type before.
That bearing puller you have is quite interesting and it looks like you have many adapters for different sized bearings. I've never seen that type before.

