By engineers, for engineers
hyTool stands for reliable industrial tools, practical advice, and service. Our aim is not just to deliver products, but solutions that prove their worth in daily work – whether in bolting technology, lifting and spreading, or pipeline construction, to name just a few areas.

A strong team
Stefan Greiff is the founder of VMA engineering GmbH and hyTool GmbH. His technical background continues to shape our approach to this day: well-founded, solution-oriented and practical.
Dominik Tröster, with over 15 years of experience in national and international large-diameter pipeline construction, knows the demands on the construction site as well as the challenges of complex industrial projects.
"We are not just a dealer, but a partner – with practical knowledge, technical depth and solutions that truly fit."
Our Story
Expertise from Experience
Our strength lies in the combination of practical application and technical depth. Through our close connection with VMA engineering GmbH, we directly integrate knowledge from analysis, test stand construction, and measurement technology into our product selection and consulting.
The result: We are not just a distributor, but a partner at eye level – we understand processes and think solutions through to completion.
What we do – our product portfolio
Our product range is deliberately broad, so that our customers receive holistic solutions for their applications:
- Tools and systems for controlled assembly and disassembly of bolted connections
- Balancers / weight compensators according to DIN 15112 for ergonomic and safe working
- Hydraulic and manual (flange) spreaders as well as lifting wedges
- Impact sockets
- Custom-made products such as special and impact sockets according to customer drawings
- Machines and equipment for pipeline construction
All products are characterized by durability, easy maintenance, and compliance with national and international regulations (e.g., Machinery Directive 2006/42/EC). Naturally, we supply our devices with test reports or calibration certificates and complete documentation.
Our Mission – Our Promise
- Quality tools at fair prices
- Quality assurance in our own test laboratory: Testing and checking all relevant tools
- Service & Repair: Maintenance, repair, and adaptation of existing equipment
- Individual solutions: Adaptation of couplings according to specifications, special sizes, and special tools
- Practice-oriented consulting: Tools that truly fit your requirements


