A fabulous piece that is very flexible, light to wear and has a high reflect.  One sphere is filled with Aston Martin Valkyrie race car swarf (shavings) used to make various engine/gear box components.  It is steel and has a great texture/light reflect.  The other side has circular swarf from the Ford GT and the ball bearing is also from the Ford GT gear box.  These are set on twisted, stainless steel wire.  A great gift for any motorsport or car lover.