With a pair of these aluminum brackets, you can connect our quad T-slot track to a flush-mounted T-slot track, creating a convenient and easily removable fence. They can be also used anywhere else you need to attach 1/4-20 T-tracks perpendicular to each other. A star-shaped knob connected to a T-bolt permits rapid repositioning on one track, while a pair of T-nuts and screws firmly fix the bracket to the other track.