Are you tired of crawling underneath your desk in the hope of finding a spare socket? I know I am. All you need is the AlzaErgo CM105 Holder, and your sore knees and banged heads will be a thing of the past. Use the clamp to secure the holder to your worktop in the place that suits you best. Then you're ready to insert any extension lead with a width between 50 and 70mm. Simple!