3 part capo to fit guitars, ukuleles, banjos, etc. The bar is quite wide so should fit most necks. You may want to place something soft between the bolt and the guitar neck where it winds on to prevent any damage to the neck. The threads are a relatively loose fit so it should be quite free-running. Print so that the bar so that one of the longest sides is on the bed, the bolt head is on the bed with the threaded section orientated upwards, and the start of threaded section of the body is on the bed i.e. hole orientated vertically.