TB90 Profile Steel is manufactured in HSS 6% as standard. Toolbox's production differs from that of our competitors, as we produce using wire erosion machines. Through our proprietary software, we can manufacture a steel that is ready to cut directly after production without the need for grinding. All cutting angles are calculated in the process for the best possible quality. A TB90 steel will always be precise, regardless of when you place your order or make a reorder!