Strong Machined Metal Knob – 1″ Diameter 09/10/201409/10/2014Klarm Machining Some cool machining metal pictures: Solid Machined Metal Knob – 1″ Diameter Image by adafruit Obtainable at Adafruit! Strong Machined Metal Knob – 1″ Diameter Image by adafruit Accessible at Adafruit!