Shapton Pro is a high-end series from Shapton made of aluminum oxide with the magnesia binder. 

The magnesia binder gives Shapton Pro excellent sharpening quality and performance, and high wear resistance.

All Shapton Pro stones are 6 mm thick and are mounted on high-quality aluminum blanks.

Shapton Pro series stones are universal and can be used to sharpen knives of any steel including high carbon, vanadium, and chromium steelsn.

Shapton Pro stones are preliminarily lapped and do not require lapping after purchase.

Shapton Pro should be used with water as a lubricant. 

Do not soak Shapton Pro stones in water for more than a few seconds. 

Just splash, or use a water spray. 

Never store stones in water. 

Never dry near heat.