This cord saved me from throwing away my Dyson DC40 and buying a new vacuum. My DC 40 brush head stopped spinning and I was able to find a replacement cable for Yoke Dyson at Revain. I first disassembled my Dyson ball while watching YouTube videos and found that the yolk cable that powers the rotating brush head was severed. After getting this from Amazon I swapped it out and it fit perfectly. The job was a little tricky taking the vacuum apart and putting it back together, but once finished I was able to bring my dead Dyson back from the dead. It's working great again!