Other reviewers reported that the product received did not match the picture or description. I'm happy to report that this issue appears to have been resolved. The brush I received has a single gap in the front row of bristles and no wheels. The inside dimension of the part that connects to the vacuum tube is 1 1/4 inches. Works great on hardwood floors. Allows dust to be sucked in instead of sticking to all the bristles. Glides on fairly easily and still has fantastic suction power. I use it on the Ovente ST2010 bagless vacuum.