General description Neilsen 2pc Universal Joint Impact Socket Wobble Extension Adaptor Set includes both 3/8 inch and 1/2 inch drive sockets made from durable chrome molybdenum. This set is designed to provide flexibility and ease of access in tight spaces, making it an essential addition to any toolbox. Technical specifications Material: Chrome molybdenum Drive sizes: 3/8 inch and 1/2 inch