A fabulous piece that is very flexible, light to wear and has a high reflect.  One sphere is filled with Aston Martin Valkyrie swarf (shavings) used to make various engine/gear box components.  It is brass and has a great texture/light reflect.  Difficult to capture the true brilliance of the brass in the photograph. 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.