The Jackson JT-570 is a single locking tremolo system made by Schaller in Germany. It's the single-locking version of the Jackson JT-590 vibrato system. Just like the Floyd Rose II which is also a single-locking tremolo. You don't have to cut off the ball-ends of the strings. The strings only lock at the nut of the guitar. Another single-locking tremolo would be the Yamaha RM-Pro II.