This aluminium T-connector is intended to make a connection between tubes of different sizes. The t-connector has a gradient of 42 millimetres from the top tube to 60 millimetres for the upright. The other size is intended for both top tube and upright with a diameter of 60.3 millimetres. The T-head is available in different finishes: aluminium and aluminium coated. Aluminium RAL 9005 black, aluminium 7016 grey, aluminium RAL 6009 green and aluminium RAL 6005 green