How to use FELCO sharpeners

Our range of accessories includes four types of sharpeners:
The FELCO 902 Sharpening Stone : Made of a high-quality corundum, with a choice of a medium-grit (blue section)or fine-grit (white section) abrasive surface.
The FELCO 903 Sharpening tool: FELCO 903 is a lightweight multifunction sharpening stone made of hardened steel with diamond coating. Perfect for sharpening, deburring and tempering the blades of pruning shears, loppers and cable cutters.
The FELCO 906: Compact and easy to use, the FELCO 906 has been designed to be at your side anytime, on a key ring, in a holster or in a pocket. . Its aluminium body guarantees excellent rigidity in the hand, while the carbide stone allows the blade to be sharpened in the best conditions. Moreover, the stone is screwed to the handle and can be turned after a certain period of use to increase the longevity of the sharpener.
The FELCO 905 multifunctional sharpener: Fast, efficient and easy to use.
The standard 90° tungsten carbide sharpener helps maintain the cutting edge of the blades.
For finer sharpening, a second carbide stone ensures a perfectly sharp cutting edge.

[@Yana-zg7fr]

how are they different from each other, for example how do I know which one is best for my felco 14? If i were to just buy one, which one would be the best one for me to get? Also I noticed you didn't include the felco 904 sharpener.

[@luticpagan3549]

отличный вопрос. могли бы уже и ответить. тем более что есть еще и 906 точилка. у меня 905 - нравится

[@ivicasvilicic2325]

Hi. Do you need to soak the ceramic stone 902 ?