Teknatool was the first company to make a 4-jaw scroll chuck designed for use with woodturning over 30 years ago. This was a vast improvement over other lathe chucks of the time by allowing the turner to save time, increase safety and improve results. Teknatool now offers chucks to fit almost any woodturning need. The Precision Midi Chuck is an economical choice for smaller lathes. The G3 is a smaller chuck with single hand operation and the Supernova2 Chuck is a good choice for larger lathes. The G3 and Supernova2 chucks use an optional threaded insert, purchased separately.