[15mm]

[21mm]

TENZI Universal Cleaning Horse Hair Stick Brush PRO (0.6 / 0.8 / 1.1 / 1.1 inches (15 / 21 / 29 mm)).

This wooden stick brush is made of high quality horsehair that is soft yet resilient.
Effectively cleans tight spots that cant be reached like wheels, engine compartments, etc.
Designed to maximize car care and chemical efficiency.