Cryston DWA wheels are the premium “Made in Japan” wheels for producing high precision & finishing for Internal Grinding & Jig Grinding operations. With the smallest diameter at 0.3mm, Cryston DWA wheels allows operators to achieve ultra precision grinding with good grinding life & high reliability. Diamond & CBN Internal Grinding wheels are employed to finish-grind the internal face of holes drilled by turning and boring machines at high efficiency and high precision. They are available with and without a quill.