Having no special network cable clamp (clamp or KRONE 110), I still bought this product and I could connect son without worry. Indeed just use a small screwdriver (or similar) to drive the son in the connectors. Mine measuring 2-3 mm and did the trick. Once the son connected the housing secures the sheaths of the network cables so that nothing happens when you put the box in place. So considering the price, I think it should not hesitate!