•High Performance and High Accuracy : It has the same structure as CGH power chuck, and has excellent performance and quality. Mounting face and changable parts are compatible each other. •Spindle Direct-Mounting Type : International standard A-type spindle specification is applied to the mounting face, so it possible to directly attach to short taper spindle. •Shortening of changing time : Chuck-changing-time can be minimized as run-out accuracy is kept upon attachment. •Convenient Attachment Option : Because adapters suitable to various spindle specifications can be manufactured and attached, the scope of application is extensive.