1. Easily remove carbon from piston surface 2. Stainless steel brush handle, brush head can be replaced 3. The tube sleeve is protected, and the brush is easier to enter the combustion chamber through the spark plug hole to clean carbon deposits 4. Use with hand drill, clear and efficient, save time and effort 5. The nylon brush material is corrosion-resistant, not easy to break, and does not lose hair 6. Material: metal 7. Size: carbon brush: 378x9mm, brush head: 558x9mm 8. Note: The product only contains brushes, not hand drills and other
