3 Way Corner Connector, 3-Way Corner Connector, Nylon, Quick Frame, For Framing Type Press-Fit, Overall Height 2 1/8 in, Overall Width 2 1/8 in, Black, Unfinished, Inch, Compatible Brand and Series 80/20, Quick Frame, Compatible Manufacturer Model Number 9000-72, 9030-145, For Rail Height 1 in, For Rail Width 1 in