I found the Daylight company to be quick to respond and quick to steer you in the right direction. After a couple of years I was moving my sewing room around. I tried to lock mine on to my new desk, apparently, it did not like me that day and the piece that does the clamp broke. I didn't realize that there was something underneath the desk that I did not see. I found the company, sent them a picture and they led me to a site where I could order that piece for $25. I was going to have to purchase a new light, and in a few days my clamping piece was back in service. Best $25 I ever spent! When I purchased mine I can't imagine how I did without it. This is a deal!