After a lot of testing over 18 years, we finally found the best whet stones.
These German-made stones are sturdy; they have two sides, coarse and fine; 120/240
Can be used with oil for carbide and water for tempered steel.
Green for tempered steel
Red for Carbide
They don't wear out. Your hand and pneumatic flat, tooth chisels as well as
raschetti's will appreciate it.
Each measures 6" x 2" x 1"