[C]

1PC 3mm glassy carbon electrodes, glassy carbon core electrochemical electrodes 4mm 5mm, tetrafluoro rods 6/8mm diameter

Classification.
A: 3mm
B: 4mm
C?5mm 

3mm imported glass carbon core electrode.
(Teflon rod diameter 6mm, length 70mm)
4mm imported glass-carbon core electrode.
(Teflon rod diameter 6mm, length 70mm)
5mm imported glass-carbon core electrode.
(Teflon rod approx. 8mm, length 70mm)

Packing: 1PC
Warranty period: 120 days