In 1965, Erwin Kümmerle founded the precision engineering workshop for precision turned parts. His sons Berthold and Stefan took over the company 17 years later and have been running it under the name Gebrüder Kümmerle GmbH ever since. In addition to precision turned parts for industry and medical technology, patented arrowheads for archery have been developed, produced and distributed worldwide under the name TopHat in Germany since 2003.