Curved, Sharp, 4’’/10cm – Gradle (Without Black Rings) OR Gradle Supercut (With Black Rings) – A Line Our A-Line is the highest quality of surgical grade, Stainless steel instruments that are Made In Germany. These instruments offer the longest service life and highest standards of workmanship, and are covered by a 10-year warranty against manufacturer defects. Choose from: Gradle (Without Black Rings) OR Gradle Supercut (With Black Rings)