"I bought three to replace existing aerial sockets because I liked the 45 degree socket, which keeps the cable close to the wall.
Unfortunately I couldn't fit them because:
1. Barely enough cable was left by the electrician who wired the house to allow me to strip back the centre core 20mm (as instructed) and not have a really tight bend in the cable.
2. The outer cable clamp wouldn't grip the folded back outer cable braid without crushing the hollow insulator. Even then the cable wasn't secure since the "no screw" fixing of the inner core doesn't provide much strain relief.
I had to abandon the idea of replacing the sockets and unfortunately, since I made the stupid mistake of opening all three packages, I don't think I can ask for my money back."