Lee Valley Shapton Lapping Powders

Supplied in dispenser bottles, there are three lapping grits: coarse (80x), medium (180x) and fine (4000x). Shapton recommends coarse powder for stones with grit greater than 40µ, and medium for stones with grits between 4µ and 40µ. Fine powder is used for stones 4µ or smaller. About 120ml (4 oz) of grit in each bottle.