Not for skinny necked bottles.
EDIT: Seller reached out after the previous one-star review, and sent me a brush (free) that is not rolled at the end.  It works well for the tall 34oz swing-top bottles I need to clean.  Thank you Seller!  Review upgraded to 4 stars for good customer service.  I still recommend looking for a different brush than these for wine or other narrow-necked bottles.<br /><br />ORIGINAL REVIEW:  While these are long enough to reach to the bottom of my 1L swing-top bottles, you can't get them into the bottle because the bottom of the brush has been rolled and the metal twist is too thick to go through.  I tried to unroll one with a pair of pliers, but then the metal twist holding the bristles loosened, and the bristles fell out everywhere.  Forget getting this into a wine bottle or any other skinny-necked bottle.  False advertising, and a waste of my money.  :(
Rating: 4 stars