Engineered for durability and precision, this 18-piece extended hex bit socket set is made from high-hardness S2 alloy steel and Cr-v chrome-plated steel, featuring sandblasted and mirror-polished surfaces that resist rust, breakage, and corrosion. With both metric and Sae sizes, the set supports a wide range of automotive, mechanical, and household applications. Chamfered edges with rounded contact points ensure smooth insertion and reduced fastener wear, while the 6-inch extended bits provide effortless access to tight or recessed areas. A drop-resistant Pe storage case keeps each socket securely organized for safe transport and quick selection.