master key
thingiverse
This is a key that can use for many different lock.It is very useful for the locksmith.Because they have to bring only one key to open every door.
Download Model from thingiverse
With this file you will be able to print master key with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on master key.