For the asking price I expected the bristles to be as rare as old Nana's head. But it turns out there was a lot of hair stuffed in there. I didn't actually pull on any of the bristles but they seem to be well secured. The diameter of the head is about half the size of the original tool that came with my vacuum. As expected, I need an adapter for my Mi3le Classic C1 vacuum cleaner, but it still fits in my shopping cart with other tools. I have checked the measurements and the information on the product page is correct. Inside the large end of the adapter is 34.5mm Outside diameter of my vacuum hose is 34.2mm Outside the small end of the adapter is 31.2mm at the very end and tapers to 32mm vacuum cleaner attachments. It's softer and won't scratch furniture like plastic bristles. It beats my old tool by a mile and I love it. Advantages + Good price. + Much wider bore than my OEM tool. + Very soft. Cons: None.