For squareneck resonator guitars, Hawaiian guitars & lap steels, 6 or 8 string. This very innovative capo comes from just across the pond, in England. Machined from solid brass for great sustain, which is, of course, expected. But, this capo also utilizes a stainless steel spring clamping system with dual adjusters that allow you to dial in the capo to the specific string gauges that you use on your guitar, yielding crisp clear notes on all strings. Once you have the capo adjusted to your strings, you utilize the capo with a simple one hand operation. A very effective design. Heavy brass portion of the capo may be positioned on top of the strings or, if there is adequate clearance, below the strings, whichever the player prefers.