I received an offer on a Dyson floor model and it seems to be the only crevice tool that fits a Dyson ball I have. I thought why do I need all these extra bits? Why can't I find a cheap aftermarket version? I am so happy with this instrument and its beats! The tool is extended and the brush attachment is great for cleaning corners and air vents. This is the blue fluffy bat which is the best. It picks up dust from flat surfaces better than a rag while sucking up all the dust. I think it was worth it and the only tool I need for vacuuming.