this adapter allows the use of BOEHM knives JLB on a hand press. this adapter has a M20x1 for the mounting of the mounting disk JLBM50PA (for the knives 2-50 mm), JLBM60PA (for the knives 2-60 mm) and JLBM100 (for the knives 2-100 mm), shaft with flat side can be fixed with a M8 screw on the hand press, is compatible with EMG brand and types 3HR, 4HR, 14HR et 50HR 7HR, 15HR, 15 HR LP, 20HR et 20HR LP, cutting with the press will need caution and work with slow pressure build-up