The Mac Tools DBL6 6 Piece Double Duty Flip SAE & Metric Socket Set is a high-quality hand tool set made in the USA. The set includes six sockets in standard sizes of 13/16in. 21mm, and 19mm, making it versatile for various automotive applications. The sockets feature a 6 point drive type and are designed for use with a 1/2in. With both SAE and metric measurements included, this set is a convenient and reliable addition to any automotive tool collection.