DescriptionT-nut also known as hammer shaped nut, assembly time by profile external directly into the groove, the clockwise rotation of 90 degrees can be automatically locking and positioning, convenient installation, is one of the most commonly used parts of aluminum profile system.Features- Color:Silver.- Material: Steel. - Size: About1.00X0.60X0.40cm/0.39X0.24X0.16inch. -Model: M 3, M 4, M 5. - It is made of high-quality and durable materials and has a long service life. - The package comes with wrenches, which brings convenience to your use. - All T nuts are placed in a storage box, which is convenient to carry and store. - These practical T nuts are great for both indoor and outdoor use. - This set of T slot nuts kit is widely used for building industrial aluminum frame structures.