This Sealey Socket Set is a complete package of 19 pieces with 1/2inch Square size. It includes a set of 12 point drive sockets that come in Metric measurement. The package is manufactured in Taiwan and is made with high-quality material that provides long-lasting durability. The set is perfect for DIY enthusiasts who need sockets for their garage equipment and vehicle parts. The sockets are standard and have a drive size of 1/2inch. This is a great value for money buy and is a perfect addition to your tool collection.