METRIC HAND SOCKET SET - 24pc 1/2" Dr. Metric Hand Socket Set GS-425M PEACE OF MIND - Purchase with confidence backed by the Genius Tools Limited Lifetime Warranty against manufacturer defects DURABLE MATERIALS - Made from Chromium-vanadium Steel Alloy for high strength and durability while having anti-corrosive properties ANSI STANDARDS - Meets or exceeds the standards established by the American National Standards Institute PROFESSIONAL GRADE - Genius Tools are designed and made for use by professional technicians and built to perform over a lifetime of heavy use. Trust Genius for a quality tool at a value cost to you.