For turning larger items between centers, the diameter of the ring is 3/4".

Safe drivers are a good alternative to spurs and a MUST for inexperienced turners learning how to turn spindles, and this safe driver is no exception.
Using a Safe Driver encourages good tool control when training because a catch or heavy handedness merely safely stops the piece being turned.
With an adjustable spring loaded center, the driver always maintains a positive connection with the piece you are working on, and can be changed with the turn of a set screw.
Made with premium carbon steel.
High quality, made in Canada