Durable Polycarbonate Construction: Made from tough polycarbonate material for long-lasting use. Comprehensive Ratchet Socket Set: Includes 106 different sizes from 1/4" to 3/8" for versatility. Mechanical Operation: Uses mechanical ratchet mechanism for smooth and efficient use. Hex, Flat, and Fixed Square Sockets: Comes with a variety of socket heads for different applications. Milwaukee Brand: From a trusted brand known for quality tools and equipment.