Used for grinding valves or cleaning The product is a powder in oil. There are 2 types, coarse and fine. In the same can, Grinding Paste - CHEMICO is a high quality diamond that has been used for a long time, made in England. The product is 100% genuine, used in the valve valve grinding process. After replacing the valve The reason why valve grinding is necessary is to ensure that the contact surface between the valve blade and the valve seat is close. How to use The valve grinding process must be bumped and rubbed at the same time. And when the valve seats and valve blades are sealed together, the cylinder compression of the Chemico valve grinding wheel is not lost. This will consist of both coarse and fine diamonds in the same tin, a suitable ratio that is specially formulated by Chemico. Applications In addition to grinding new valves, it can also be used to grind old valves to clean the blades and shoulder edges. valves, which will increase the compression of the engine as well.