The Sunex Tools Head Bolt Socket Set is a high-quality automotive tool set specifically designed for removing and installing cylinder head bolts. With a durable construction and impact-resistant sockets, this set includes 5 pieces in metric sizes. The black oxide finish not only provides corrosion resistance but also enhances the overall appearance of the tools. Made in the United States, this set is perfect for professional mechanics and DIY enthusiasts alike who require reliable and efficient tools for automotive maintenance and repair.