We purchased a set of tools, a set with a lifetime warranty, used it at the first need, as a result, the crank key broke! As a result, they handed it back to the store, it was sent back to the factory. As a result, not a warranty case! I wonder what kind of warranty case? The term after the delivery of the instrument 45 days is violated! When calling the factory, they offered to buy a key for 1300, despite the fact that in the store exactly the same collars cost 650-700 ! I do not advise buying this product! and generally bypass this factory! There can be no talk of any promised guarantee at the bottom!