The Chosera stones are among the finest synthetic waterstones available. They provide an excellent, smooth feel while working and deliver a fantastic edge and polish. They are a great addition to the abilities of the KME Sharpenering system The full line of Chosera – 8 grits – from 400 to 10,000 – are available in this 1×4 inch size. These stone are cut to 1′ x 4″ and at least 5mm thick The Coarse grit Choseras (#400, #600 and #800) are best for re-profiling, for initial sharpening, and for general maintenance and repairs, including removing chips. The #800 Chosera leaves a toothy “working edge” These grits will quickly clean up and remove the deep scratches left by the Diamond Hones The Medium grit Choseras (1K, 2K and 3K) quickly produce excellent edges. The green 1000 grit is a real work horse – sometimes called the “incredible hulk.” It will handle light repairs and chip removal and leave a really nice working edge. We really like it as a follow on to the fine KME diamond hone for its quick work removing the deep scratches left by the diamonds. The 2000 will follow the KME ceramic hones nicely and is a great transition step between the 1000 and 3000 Chosera hones. The 3000 grit stone is going to give you an even better shine and a more refined working edge. The Fine grit Choseras (5K and 10K) polish and finish your edges producing a beautiful shine and ultra smooth edge. NOTE: Chosera stones are used with water only.