It is perfect for metal and nylon for quick removal of external insulation. The capabilities of the tool are well-known, tested for decades, and do not require many recommendations

Very good tool, you screw and unscrew from below and the blade inside goes up and down. I just want to add that the blade inside is not fixed, it rotates, so you have to manually position it where you want to scrape a cable while it is moving, it does not go up and down. You can only screw and unscrew from below.

It also has a knife. On one side, it is a straight knife, while on the other side, it has a curve to grip the cables and pull them to tear the insulation or to grip the tie-ups and cut them if you have cables held.

20/1/2021 I still have it, the only downside is that the knife on top has rusted quite a bit. But it still cuts like a razor