EISCO Curved, Flask Cleaning Brush, 15" - Twisted Stainless Steel Wire Handle - Ideal for Labware, Glassware, Beakers, Bottles, Jars, Cups, Vases ...

The quality of this brush is very cheap and nothing like the picture and description. The bristles are very soft and would not scrub the items I intended to use it on. Save your dollars

Perfect for cleaning Erlenmeyer flasks

I ordered this brush specifically to clean the many hummingbird feeders I use because they tend to build mold which can be toxic to the birds. I find myself bending brushes to reach the curved edges where the mold attaches so I thought this curved brush would be the perfect solution to my cleaning needs, and indeed it was. The bristles are about 1.5 inches in width and are firm but not too stiff so they don't scratch the surface, but remove the dirt and mold. The handle is twisted stainless steel wire that is also sturdy but flexible so I am able to manipulate it as needed in the narrower spaces, and it is 8.75 inches long so I can maintain a good grip while cleaning. Overall, the brush length is 15 inches with a loop on the end to hang it to dry after use. This brush is listed as being for professional laboratories but I have found it to be useful around the house for jars, deep cups, water bottles, and of course, my hummingbird feeders.

This is a good, sturdy bottle brush to clean out hard to reach areas. The bristles are flexible enough to get into a narrow bottle neck and spread out while inside. I was also able to bend it into a different shape to reach an odd configuration, so it met my needs perfectly.

Did not fit in the mouth of my flask. Had to return for a refund