Universal adapters locking and quick change function
Reliable screw hold in the bit due to magnets integrated in the adapter
Colour coded bits allow you to maintain an overview and find the right bit quickly
Durable screwdriver bits for 5 screw head types in 20 standard sizes
This is very very small .. speaking from experience .. i mean really small .. check the sizes and buy only if you have a requirement to work with really small screws or nuts.
Thanks ops for the deal.