• The package contains 20 thumb screws: 10 units of M5 x 20 mm and 10 units of M6 x 20 mm, ideal for different projects • Made of high-durability carbon steel, with a galvanized surface that protects against rust and corrosion, ensuring long-lasting use in various environments • Precision screws with fine threads and knurled surface, providing a secure fit and preventing slipping during rotation • Wavy edge design that improves friction, allowing for easy installation and removal without the need for additional tools • Versatile and suitable for a wide range of applications, such as mechanical equipment, measuring devices, industrial machinery, household appliances, furniture manufacturing, and testing equipment