All distal surfaces of bicuspids and molars. Terminal shank reach is 9 mm. Nordent standard Gracey curettes feature a blade face curve with a true radius that conforms to tooth anatomy better than any other brand. This means that Nordent standard Gracey curettes are easier to adapt, require fewer strokes, and reduce tissue trauma better than any other brand. Nordent standard Gracey curettes have a 1.1 mm terminal shank diameter and blades that are 0.9 mm wide and 4 mm long. Featuring our DuraLite® ColorRings™ Handle.