Yes. It's Global Natural Gut with black marker over the label. I use it every now and then as main strings. It seems very low powered to me as far as gut goes, but I've read more contradictory reviews on these boards when it comes to cheap gut than any other string. I usually cut it out after 4 hours because it feels dead, but it plays well for me 'til that point. There is definitely a difference between the black and the natural--the black has a coating, plays stiffer, has less power, and is easier to string. The natural color is a disaster to weave as crosses. This is all in my opinion of course. I've had it snap once stringing the mains on a drop weight at 56, but I've strung it at 60 on a lock out 9 or 10 times without a problem, mostly as a main string. I will say that I complained to the guy on E bay about it snapping and he promptly refunded me, obviously more concerned with his seller rating than the $10. That's what I know and I hope it helps.