This Curved Joining Plate is specially designed to:  Join lengths of V-Slot at 90°, 67.5°, 45° and 22.5° angles.  Make possible the mounting onto V-SLot of 8mm smooth rods or 8mm lead screws at an offset. Perfect for all kinds of build, including robotics, 3D printers, egg bots, laser cutters/engravers, and so much more!   Finished with anodized black brushed aluminum.       3D Model: