The new SALT SAVER from Spyderco Knives. The Spyderco SALT series of lockbacks features an amazing steel- it doesn’t rust! Not only does the company claim this amazing fact, but our personal experience has shown it to be true. It also will hold a good edge for a reasonable time. The SALT series is available with a variety of blade styles and they just released a hollow ground, rescue shaped one called the SALT SAVER. It has a fully serrated 3-1/8″ blade.