Safe Drivers are made from premium carbon steel - they are made to last.
The #2 MT Safe Driver is SPRING LOADED!
What this means is the point has a spring behind it so you will always achieve a positive connection with the piece you are turning. Not only that, you have complete control over the amount of tension in the spring by adjusting the screw in the bottom! The set screw in the side prevents the point from being ejected due to the tension in the spring.
You no longer have to use the Tailstock to adjust the pressure on the work piece. Simply increase / decrease the amount of tension in the spring by tightening / loosening the set screw in the bottom of the driver.