The product has the following ferrule diameters: for LC, it's 1.25mm; for SC and ST, it's 2.5mm. It can be put together with 1.7mm - 2.1mm diameter cables. Both the LC and SC connector sets come in green for single-mode APC, single-mode PC comes in blue and multi-mode in grey. The SC complies with IEC 61754-4 and LC with IEC 61754-20 standards.