BTBienne Special Tools LLC was founded in 1994 in Biel/Bienne by Alexandre Trachsel and Manuele Bonù, and supplies hard-metal special tools of very high quality.

Malisani LLC was founded in 1984 and produces identical tools. It was acquired in 2011 by the two managers of BTBienne Special Tools LLC.

July 2017 : The company Diametal SA in Bienne merges with SCT Holding SA, which brings together the two companies BT Bienne Special Tools Sàrl and Malisani Sàrl from Bienne. Thanks to the union of their forces, the two groups belonging to Kowema AG will be able to better serve the needs of their customers. www.diametal.ch

50 years of experience

Our tools, produced exclusively to your designs, are used in many sectors of industry, such as watchmaking, car manufacturing, data-processing, implant technology, orthodontics, bar turning and many other sectors.

Our range comprises special tools such as drill bits, milling cutters, reamers, gravers, gauges and more. Our technical department is at your service to help you with the development of any new project.

Our machine-tool base includes an extensive range of CNC and manual machines. We are also equipped with inspection tools so that we can provide you with measurement reports.

Try us !

Our two companies are recognized, both in Switzerland and around the world, as suppliers of high-quality products in a wide range of industrial sectors. We owe our success to our ability to fulfil orders with very short lead-times and at competitive prices.

Take advantage of our 50 years of experience, and you too will be won over by our products.