KAISeki Magoroku Diamond and Ceramic Sharpener (AP-0308), Black/White, 141 * 51 * 55 mm (Length X WidthX Height)

Easily the best touch-up sharpener that I've ever owned. Use the wet stones much less with this around! Great product!

Not hard to use just run the blade from right to left on each stone 10 times. You don't have to push down really hard on the stones. if you do you might end up breaking it. Great at sharpening most blades.

Instruction in the package in Japanese but it’s simple. Start with 1 (10 times), then move onto 2 (10 times) and 3 (5 times) to complete.

Works great, but one design flaw. The sharpener slides in and out of the clear section. When extended, the black section moves around fore and aft inside the clear section. This sometimes will cause the knife being sharpened to be pulled back in an angle relative to the sharpening elements. Three sharpening elements do work well, and correct angle for my Shun knives.

Great to have it.

Sharpens great, easy to use and hold, but 2nd time I used it the middle stone came off spindle and went crooked and unable to fix that, so only have the fine and coarse wheels working now.

It’s so easy to use, but the result is very phenomenal. This makes sharpening kitchen knives much more fun. I will sharpen my kitchen knives more often for sure.

Works as promised, sharpens my KAI knives like a charm. Easy to use, just slide the knife on the slots. Slot 1 is the diamond sharpener for dull blades, slot 2 is the ceramic to correct the angle and slot 3 is to smoothen, finish the edge. Use the sharpener without water, since it is a dry method sharpening. Directions are in Japanese, but just used Google translate to get it in English. Highly recommended!👍