The Granit 7889200421 ULTIMATE+ double ring spanner is a professional-grade hand tool designed for durability and performance. Manufactured from high-quality chrome vanadium steel, it ensures exceptional strength and resistance to wear. The spanner features a matt chrome-plated finish, providing enhanced corrosion protection and a comfortable grip. With ring sizes of 20x21mm, this ULTIMATE+ series spanner is suitable for a wide range of fastening applications, offering reliable and efficient operation for mechanics and technicians.