machined from bearing bronze with a copper swivel ring assembly
A little more information on this product:
New to my product line, these 2.5" long hex bit drivers accept and utilize standard 1/4" hex inserts. They have a swivel assembly where the ring attaches to your keys allowing the driver to rotate or spin in your hand while you go about your work and fasten or unfasten your screws.
While in use, the Hex bits are retained in the driver via neodymium rare earth magnets.
Designed to be a handy portable precision screwdriver for adjusting or working on items like watches, eye glasses, pocket knives or any other component with very tiny hardware.