what coating does it have? i bought a $5 mini-adaptor-screwdriver from overseas in a small market that said it was coated with vernadium. I don't know what that is, but this thing is as strong as the make-believe vibranium. I haven't even worn it out 0.001% all even with years of abuse fixing my bicycle. best $5 i ever spent.
Coating does not matter.
But bits material matter a lot, here it is S2 chrome molybdenum steel, same as Wiha and other similar top sets.
Another nice option for $16,99 with more bits
https://inskerhome.com/products/multi-purpose-precision-screwdrivers-kit-repair-tool
Or with much more bits for $17,99
Code - BGML1899
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