Product review (2 stars): Caution
Great product until the flexible shaft snapped in 3 places, leaving the brush & part of the shaft stuck deep inside the dryer vent. Took a while to fully retrieve the components so the dryer vent wouldn't be blocked by the brush that was supposed to remove the lint accumulation. The product was purchased in 2010 and used 3-4 times a year (and worked extremely well), but the plastic material appears to have degraded over the years. I recommend checking the flexibility of the plastic material before using it.