The great advantage of these interdental brushes is that they are metal or wire-free. No more injuries caused by broken wire brushes, let alone that the broken brush gets stuck between the teeth and they (especially in the molar region) must laboriously out fumble again. With this product, no problem. The handle is standard komfortabel- because I had already Besseres- but it works. Personally, I find the stems too short. To reach the last molar tooth gap still, you little acrobatics must already apply. The brush itself is nice and soft and well geeeignet for tight interdental spaces. For very widely spaced teeth, it is however not particularly well suited, because the "bristles" small, are short and relatively wide apart and the whole brush is rather petite.
Unfortunately, they bend very quickly, which makes a repeated use rather problematic.
Conclusion: These interdental brushes are designed for people with tight spaces between teeth, who do not like wire brushes and where some fumbling with the short stem not mind well suited.