T992 Soft rubber stone (T0992)
Every person should own one of these. Great for removing rust and burrs. Also works well for feathering back (detuning) the tips and tails.
T994 Hard rubber stone (T0994)
For polishing and light to medium edge clean up. Can be used after filing to remove micro burrs.
T995 X-hard rubber stone (T0995)
Extra hard gummy. Used after filing to remove micro burrs. Makes the steel edges more durable.