D (Outside diameter): 12mm
L (Inside Length): 20mm
d1: 2mm, 2.3mm, 3mm, 3.17mm, 4mm, 5mm, 6mm
d2: 2mm, 2.3mm, 3mm, 3.17mm, 4mm, 5mm, 6mm
Material: Aluminium Alloy
Top wire angle: 180 degree
Package list: 1pc D12 L20 Aluminium Alloy Rigid Top Wire Coupling