Strength: Tuned energy-absorbing torsion zone for 120 times performance over Wiha Tools standard bits Durability: Rigorous heat-treatment process for 120 times service-life over Wiha Tools standard bits Accuracy: Exact-fit precision-machined tips for safer, stability, and reduced fastener cam-out Energy-absorbing Torsion Zone for 120 times performance over Wiha Tools standard bits Computer-controlled heat treatment for 120 times service-life over Wiha Tools standard bits