This is here since there isn't a section in BR for it. This is, as far as I can tell, Gosen's version of the BG 80 string. Same thickness of 0.66 mm, similar name, and it came in at about a dollar a pack cheaper than BG 66. It actually played a lot like BG 80, sure it had a bit less power, but the racquet felt more stable, control wasn't bad either. However it also broke like BG 80. I've been using BG 66 for ages, which for me means strings start fraying at about 2 weeks of play and hang on till about the 1 -1.5 month mark before breaking. These strings seemed great, had them for about a month, no fraying at all. Then a few days ago I saw they they'd just started to fray. First time I played since then, they broke in the usual place for me, 1 cm above the dead centre of the head on one of the two centre strings. Good string though I think I prefer BG 66 for the money.