Material: Aluminum. Thread: M8. Quantity: 6pcs. Set of 6 M8 sliding T nuts for woodworking tools. Undersized to fit in the machine table slot. Used for T-slot aluminum extrusions to connect other parts and connect with T-bolts or others. T-slot nuts allow the user to add clamps to a device without tearing up existing clamps. Note: The data is all measured manually, please allow an error of 1-3cm. Due to the difference in light and display, there may be some color difference. the actual item received shall prevail.