This is a brand new Kobalt 15-piece multi-drive dog bone universal socket wrench set. It features non-ratcheting action with a system of measurement in SAE. The set includes sockets in sizes ranging from 1/4 in. to 1/2 in., and the socket type is universal. The set is made of alloy steel and metal, and it comes in blue, gray, silver, and black color. The model number is 85599, and it was manufactured in China. This set is perfect for anyone looking for a versatile and high-quality socket wrench set for their home and workshop needs.