These files are 4" (101.8mm) in length. This is a #2 medium cut, 12 piece set. Includes a Round, Square, Knife, Half Round, Oval, 3 Square, Warding-2, Equaling-2, Barrette, and Crossing file.
These are great for small work. With this size and variety of shapes, you can get into any small space and file away.
You can use a ring clamp to help hold the metal while filing.