This hexagonal key set also known as Allen Keys are constructed using durable zinc-plated steel, making them suitable for a wide range of DIY tasks within the home. The metric set of hexagonal keys will be a handy tool to keep attached to your keyring, or on the go. With rust and corrosion-resistant surface, this keyset is sure to be a valuable tool for any DIY needs.Each set contains 9 keys ranging from 2.0mm to 8.0mm. Each key is attached to the steel keyring included providing easy storage.