The drive is provided by a 72-tooth inner ring made of high-alloy special steel, even with a lever movement of just 5 degrees. Nevertheless, the transferable torque values are well above the DIN/ISO specifications. The shafts are made of CrV steel and offer optimal surface protection: nickel-plated twice and matt chrome-plated once. The sizes are clearly legible thanks to a laser marking process. The self-locking feature of the joint, which is very pleasant for practical work, remains unaffected even after more than 10,000 operations. Due to its flexibility, the product is unmatched when working in tight and tricky spaces.