Unsurpassed quality, process reliability and versatility – this is the promise behind the ARNO thread-cutting system. With typical ARNO quality right down to the last detail, you benefit from a long tool life and maximum precision. Whether an internal or external thread, trapezoidal or round thread, Whitworth or conical pipe thread – with the appropriate clamp holders, boring bars, indexable inserts and support plates, success is possible at the first attempt.