The Rivet Nuts Countersunk Round Knurled Body Open Steel M3-M12 9.5mm-29mm is a high-quality product made from steel with a zinc finish. These countersunk rivet nuts come in various sizes ranging from M3 to M12, with a length of 9.5mm to 29mm. Packaged in various box quantities, they are designed for use in various industrial and office applications. The one-way drive style and metric system of measurement make them easy to install and use. Ideal for fastening and securing materials, these rivet nuts are a versatile and efficient solution for a range of projects.