Baseball training equipment developer, Field Force's Backspin Tee. I've been using it for practice, and I'm putting it up for sale now. It's got some dirt, but it doesn't affect its usability. Not only can it be used as a backspin tee, but it can also be used as a regular tee. You'll need two wrenches if you disassemble it completely and reassemble it, so I'll include those as a service. I'll also send it with an IKEA bag for carrying it around, at least to a minimum extent. The price includes shipping because the shipping cost is high due to the weight and size.