Practical suitability of stainless steel tools Hardness grade for workshops: Minimal hardness meets standard hardness of standard tools (special hardening process) lifelong steam-pressure-temperature-autoclaving cycles at up to 134°C / 2 bar (pharmaceutical industry, medical technology, hospital sector, etc.). Therefore all tools must be either stainless steel or autoclaving-safe special synthetic material. Functional practical suitability: No compromise in functionality. Guarantee: Life-long guarantee against breaking and manufacturing defects. No fats or oils: All tools and tool trolleys/boxes are fat and oil free (including fittings and ratchets). This allows for countless autoclaving cycles at up to 134°C / 2 bar (pharmaceutical industry, medical technology, hospital sector, etc.).