I have a Collings 0M2H and I have been back-and-forth between medium and light gauges never finding strings that are just right until I found these. They feel good and they sound great!

There is something about these strings no matter acoustic or electric. The tone they produce is phenomenal. I like played with 13's for a long time but I started using the 11.5's and they are a way more versitle than what I was using. If you are always searching for a better tone I promise your search will end here as did mine 6+ years ago when I discovered this brand.

Perfect on my Martin OM28, the only string I use.

These Curt Mangan half size strings in phosphor bronze are absolutely the best Ive found for my Martin OM28 for tone, ease of play, and longevity - perfect, its all I use now.

Used them 3 times so far, on different guitars. Great tone , great feel , Cheers !

This is my first time trying these. I've also tried the regular light and medium light. Overall, the half-pipe strings are like a semi-light set of strings. The 0.53 is the same as a light E bass string, but the A (0.43) - is a tad heavier than the regular light A (0.42). Then the rest of the strings (D,G,B,E) are all 1 to .5 less than regular light. They still sparkle and have given my old Gurian guitar a different feel, achieving some good bottom end and a tad easier to finger pick on the top. I'm enjoying these half-pipe strings!