Length:approx. 300mm / 400mm / 500mm / 600mm / 800mm / 1000mm. The 2040 T-Slotted Extrusions are perfect for DIY, such as building the 3d printers and so on. The extrusion are a great framing material as they are adjustable and can hold T-Slot Nuts on all 6 Grooved Surface sides.
eBay