As the name suggests; extra safe and in all ways. With this clip you can use the so-called Hit & Run system. A very fish-safe system where in the event of a line break the carp loses all leaders, main line, and lead. Only the bottom line remains in the mouth. Unique and very fish friendly!
The PB Products Hit & Run X-Safe Lead Clips is evocative, to say the least, but that's why you're drawn to it in the first place.