Thread Diameter: M8 (machine screws); 8mm/0.31inch (wood screw); Total Length: 50mm/1.97inch Material: Stainless steel construction with excellent corrosion and rust resistance and long service life. Advantages: suitable for wooden furniture. One end is machine wire and the other end is wood wire. Application: wrought iron furniture, garden furniture, home furniture, custom furniture, office furniture, column stairs, wooden railings, solid wood furniture.