Selection of Tools: Diamond Size Choosing a stone of the right size is an important factor in keeping diamond tool costs down while doing a perfect job. Use of too small a stone induces rapid wear.On the other hand, the use of too large a diamond may also be wasteful. Selection of the proper size stone is dependent, to a great extent upon the size wheel to be dressed. SPI J & L and J & S Series

• Special Octahedron diamonds concentric for thread grinding and for use in J & S Radius Dressers.
• Standard Shank Size 1/4" x 1".