Excellent value, small brushes and a small cottony fiber product vial. 2 to 3 drops on the brush and 2 passes on the sensor and I removed dirt and grease stains on 2 sensors (with 4 brushes). Conclusion: Effective and Affordable!
a passage to / hop and farewell greasy spots, it is however incomprehensible that it is so expensive (6 unfortunate sticks and a tiny vial of solvent). We will try to fend otherwise the next shot :)