Daiso interdental brush

This is an affordable interdental brush I bought at Daiso. It costs 2,000 won for a pack of 10. There are four thickness levels, and this one is about the third thickest (SSS). It is 0.7mm thick and features a special nylon coating. If you bend the head, it is easy to reach even the corners and remove debris that a regular toothbrush misses.