High strength ZYLtech 2020 aluminum extrusions are made of 6063-T5 aluminum alloy. The T slot features smooth rounded edges and is compatible with ZYLtech branded accessories and many standard 20 series aluminum extrusion fasteners including drop in nuts (hammer nuts), spring loaded nuts (roll-in nuts), 2028/2020 90° angle brackets, T/L shaped plates, 3-way corner brackets. Open source and 3D printable carriage designs are also available.Please note even though the extrusion features standard T slot, it may not be compatible with other slots and some other non-ZYLtech branded accessories. Please refer to the drawing or contact the manufacturer if there is any compatibility concern.Each product contains 10 pieces of 1 meter (about 39.5") long extrusion.Appropriate cutting tool/equipment and hardware (not included) are needed to build your unique design.