I have this ceramic rod arrangement to put a quick edge on utility kitchen knives. Bought it in a local hardware store more than 20 years ago. I use it to touch up blades just before filleting chicken breasts or fish or slicing tomatoes. I have no idea who makes the ceramic rods, not sure there is much difference in manufacturers.
FWIW the Bearded Butchers have a youtube video on using a stone. It is revealing how much metal is removed by constant sharpening. Word of caution: never get in a knife fight with those guys