Earlier this month I bought a cheaper drive brush roller from this supplier. This block did not fit, despite claims that it did. When I realized that the other one didn't fit, I ordered this one. According to the description, this device is suitable for all nv750 series vacuum cleaners. Even the drop down menu says it fits my vacuum. I have nv751 and the connection on this device is too small. It fits my old Apex vacuum perfectly, but it's not the one I ordered it for. I don't know if someone is running a scam here or if someone just pulled the wrong article. In any case, this device will return as soon as possible.