Sedulus Hog bristle flat paint brush is the inexpensive variant.
For long-lasting wear, clean the brush thoroughly with water after use and remove any paint residue. After cleaning, briefly shape the bristles and lay them to dry or, even better, hang them up until the next use.
Brush length short: 16 cm from the end of the bristles to the end of the handle. The size information corresponds approximately to the width in millimetres measured at the end of the bristle - 16mm