Wide Application: These M6 locking nuts and screws are generally compatible with most square-hole racks and cabinets. For a rapid and seamless assembly, place the cage nut in the jaws of the tool then squeeze the sides of the cage nut to easily insert the cage nut into the hole Premium Material: Made of carbon steel with galvanized design. High temperature resistant, corrosion resistant, rust and oxidation resistant Elaborate Design: This product is finely made, standard metric M6, and the error is within 0.01mm. The thread is sharp, clean and accurate, with compact structure and uniform stress, and it is not easy to deform and slide during rolling and installation. A deep and clear flat crosshead helps to improve your work efficiency Thorough Preparation: Self-locking nylon cable ties expand the product's range of applications, and the included clear plastic case is easy to store and carry 120Pcs M6 x 16mm Rack Mount Cage Nuts, Screws, Washers and Self-Locking Cable Ties, Rack Mount Screws and Square Insert Nuts for Rack Mount Server Cabinets, Shelves, Enclosures, Routers Color: Black Material: Metal Package Contents: package :35pcs rack mount screws, 35pcs square cage rack nuts, 35pcs black washers, and 15 self-locking cable ties