I just finished using this product to clean my window air conditioning unit. It reached into every little nook and cranny. The long tube reached to places my hand never could. The air suction remained great even when I bent the flexible tube at a pretty good angle. It attached to my DC25 perfectly and had strong suction just as all my Dyson attachments do. I have a lot of attachments, but I think this one will become my favorite. I LOVE Dyson products; do not hesitate to buy this one!