Pair of valve grinders designed for manual engine valve lapping. Four cup diameters: 16, 20, 29, 35mm fit a wide range of engine heads. Shaped wooden handles for comfort and ease of use. Stick lengths: 210, 230mm. Rubber end cups sized to stick to valves for accurate grinding. Ideal for use with grinding paste, Part No. 2561. Set of grinders & paste also available, please see Laser Part No. 6229.