Medium/Highest, 2-foot piece Width .080 Crown .050 Tang .048 For acoustic or electric guitar. Extra height for leveling and recrowning after installation or refretting. Fretwire is made in a variety of crown heights. Note that after the frets are installed and leveled, they can lose from .004" to .010" in height. High fretwire has a crown height of .045" or more. It may offer more note sustain due to its slightly greater mass, and more fret dressings are possible between refrettings. Low fretwire is often useful for partial refret jobs.