I got this tool as part of an "extras" package that came with my dc-39 canister vacuum. I can say that, other than the regular attachment on the vacuum, this is the one I use next as often. I like it for tight areas such as baseboards behind furniture, around the legs of small, unique pieces of furniture (such as a three legged table)and for narrow clearance areas such as electronics and the tops of books on shelves. I also like it to vacuum birdseed off our non-carpeted stairs. I can see where it would be useful for many types of stair railings, too. I will recommend this with 5 stars. It works very effectively for my cleaning needs.