I got my Lovejoy couplers today, and I will have to say I was a bit dissapointed to find that they are not real tight. I didn't get the Buna rubber but the next hardest spiders as that was all that was available for the 50 size couplers. You can feel a slight amount of rotational play in them. Its not much and it might not even show up in the cuts. I guess I'll use them and see what happens.