Sure, you could slap down $300 for a Griffin, but why bother unless you are running a commercial pottery production line. This unit works just as well, and is perfect for smaller wheels without the need to remove the plastic splash guard from your wheel.For $55, this unit is a steal for what it does. Most others are 75-100 dollars and made for large wheels. This unit is specifically designed to work with a range of the common hobby grade wheels from Vevor, et al, out of China as they are, with few exceptions, all 12 inch or smaller wheels.I really do not understand all the poor reviews complaining about the unit being plastic, poor instructions, etc.1) All brands are plastic, it's just a question of what plastic. This one is ABS, very well designed and produced, and the wheel is fully assembled in the box, so all you have to do is dial the bottom side in for the wheel you are using, secure the three lock clamps, add the top clamps and you are ready to load greenware to be trimmed and adjusted to your desire.2) As for the instructions included (with photos of each step and each component), this product is easy to understand and use IF you have ever used a trimming wheel on a pottery wheel before. If you read them and follow them, and have any understanding of pottery trimming wheels, you will have no issues with setting up this wheel. The insutructions are both clear, and fine.What is not clear in the product description is that there is a complete set of different lengths of aluminum poles for the rubber clamps for holding higher profile pottery objects. So you have a full range of lengths and the poles are super easy to change out. They come in a small zipper bag that holds accessories for the wheel. So this unit really is a functional equivalent to a top end Griffon unit, at a much lower price and perfect for wheels that are 12 inches or under (mine is 11 inches). Most trimming wheels offered on Amazon are designed for 14 inch wheels so they are going to be too big on smaller wheels (even though they do adjust down) unless you remove your capture tray from your wheel (which is not a good idea if you do not want trimmings sliding/flinging all over the place while you are working.