Similar in function to the retractable key chains often used by building “supers” or security guards, this pencil holder has a 28" cord in a 1 1/2" × 1 1/4" rectangular case with an attached mounting cup. The tapered cup is flexible, gripping an item much like a Chinese finger trap, so it won't accidentally dislodge in use.
The retractable cord can be set for two modes: constant tension, with automatic retraction when released, or lock and release, where once extended, the cord retracts only with a tug. Metal clip on the back to attach to a shirt or belt loop.
A great way to keep pens and pencils at the ready.