Yes mate, it's called the korda lead clip action pack. Think it contains 5 whole rig components so 5 of each part which is tubing/rubbers/clips(with swivel inserted). You just simply thread the tubing onto your mainline. Thread it through the rubber and tie it onto the swivel in the clip. Connect your hooklink onto the swivel on the front of the clip pop your lead on and your ready to go. In the case of a snap off the lead will come free from the clip. It will also come free if your fish gets snagged during the fight which can help you land a fish you otherwise may of lost. Sounds a bit complicated but im sure with the instructions on the pack it's a diddle Only issue though is if your mainline is old and twisted the tubing will be a pain to thread on. But it's probably time to replace it if it's in such a bad way
http://www.carp.com/carp-forum/viewtopic.php?t=37603 a diagram of the rig