90° 3-way square corner
45° 2-way square corner
2 a 6 way box corner (4 nodules) 40 cm long sides
60° 2-way square corner
2 a 6 Way boxer corner (8 nodules) - 40 cm long side
90° 2-way square corner
4 way tee
120° 2-way square corner
135° 2-way square corner