This 3 - hole plate is a great tool to connect various 20mm slotted aluminum extrusion pieces. It measures 40mm in length, 18mm in width, and 4mm in thickness. There are 5.3mm drill holes spaced 20mm apart, allowing you to use M4 or M5 screws. For attaching it to 20mm extrusion, 10mm long screws are recommended.
Using this coupling plate is easy. First, line up the plate with the 20mm slotted aluminum extrusion pieces you want to connect. Then, insert M4 or M5 screws through the 5.3mm drill holes, which are 20mm apart. Remember to use 10mm long screws for a proper fit. When handling the plate, be careful as the edges might be a bit sharp. To maintain it, simply wipe it with a dry cloth from time to time. Avoid using harsh chemicals as they could damage the aluminum surface.
