Compatibility: Hapstone (all except V7)

The width of the clamps is selected in such a way as to allow you to install up to 4 clamps simultaneously on the frame to securely fix even the most flexible fillet-knife

Grit ratings on the rods are approximately 1200-1500 for the fine and 100-200 for the coarse

Tsushima is natural stone with estimated grit approximately 5000 JIS

digital angle gauge Compatibility: Hapstone (all except V7)It's very important to keep a sharpening angle consistent on a guided knife sharpener. The angle should not change when replacing one sharpening stones to another. In order to control the sharpening angle, one measures the angle between the knife plane and the sharpening stone. There are many similar digital angle gauges on the market. This model is very light, which is a huge advantage when using with conjunction with a knife sharpener.