General description Neilsen Universal Swivel Impact UJ Driver Deep Socket Set is designed for versatility and durability. This set includes a range of metric sockets that are perfect for accessing fasteners in tight spaces. Technical specifications Construction: Drop forged, heat treated, chrome molybdenum steel Finish: Durable phosphated finish Drive size: 3/8-inch Socket sizes: 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm Design: 6 point swivel metric sockets Usage The ball swivel action allows for easy access to sockets in tight corners, while the radius corner design ensures that only flat surfaces of the fastener head are contacted, preventing rounding off corners and extending the life of fasteners.