Yes. In the mid-2010’s, I thought of the concept, made a few models for myself, and used them in my garage shop to make and repair audio cables and solder wires. My grade-school daughter started using them to hold weird-shaped rocks while making jewelry for her friends, and everyone who saw it told me to sell them. I debuted them a couple years later at my booth at the NAMM Show in 2018, and that’s how it started. Now, RadioShack.com is the exclusive distributor of the “Original Hot Holder” for Audio, and I have a “PRO” model and one for DIY Guitar Pedals. They are all still made here in San Diego by local job shops, with supplies from local vendors.