This is a complete set LT2 tracks. They have been used but have plenty of tread left. They will work with LT2 or LT2-F. These generation 3 tracks are a more aggressive pattern than the standard LT2 tracks.
ATC and ATO blade fuses are standard sized fuses and are the most common type of fuse for automotive and marine applications, and are commonly mounted in a fuse holder, block or panel within an electrical application.