Industrial Grade Allen Wrench Set -- High quality chrome vanadium steel manufactured allen key wrench kit with a hardness of 52-54HRC, which is durable and strength, anti-corrosion and rust resistance, professional and longevity. Professional Deisgn -- Long arm offers extended reach and enhanced leverage and torque. Ball end to access socket cap screws up to a 30°entry angle, allowing easier access to those hard-to-reach places and making it easy for adjusting in all angles. Drilled Torx Wrench -- Precision chamfered ends and drilled tip offers a snug fit and insert smoothly into tamper-resistant screws and fastener head, readucing wear, protect screw head and allen key tips. Ergonomic Design -- Engineered TPU handle of the allen key with dot texture provide excellent grip and torque transfer, more efficient working and labor saving! Further more, handle marked with clear size for easy selection.