The PHOENIX CONTACT part 1201578 is a set of rail adapters designed to securely mount components using M3 screws. With a length of 42.6 mm, a width of 10 mm, and a height of 19 mm, these adapters provide a compact and efficient solution for mounting various devices on rails. The color of the adapters is gray, adding a sleek and professional look to your installation. Made with high-quality materials, these rail adapters ensure durability and reliability for your electrical and industrial systems.