Good quality Mortar and Pestle set size is 5 inch , very useful and multi purpose product , you can take this in use to grind your useful medicine / kitchen ware stuff, A pestle and mortar is a device used to prepare ingredients or substances by crushing and grinding them into a fine paste or powder. The mortar is a bowl, typically made of hard stone. The pestle is a heavy and blunt club-shaped object, the end of which is used for crushing and grinding. The substance to be ground is placed in the mortar and ground, crushed or mixed using a pestle. Mortars and pestles have been used in cooking up to the present day; they are frequently also associated with the profession of pharmacy due to their historical use in preparing medicines. They can also be used in masonry and in other types of construction.