Star diamond tools manufactures a new range of varieties of multi layers blade type tools specially recommended for angular and centreless grinders. It is available with a swiveling holder or with diamond abrasive plate brazed in a shank. Other major advantages of this multi layers blade type tools include whole non - crushed natural grains uniformly disposed in a special pattern, hand set for confirming to very close tolerances on the work piece, particularly for turning and forming of profiles, restores the required effective roughness of the wheel surface and is adapted to the machining operation by varying the traverse dressing feed.