The eccentric bushing is an essential accessory for all tomes that lack the axis of Y. This bush allows to correct all symmetry errors that may appear in slotting workings and tools made in steel are then hardened and grounded. Its working range varies from 0.5 mm Y+ a 0.5 mm Y-. On request the eccentric bush can be produced in different sizes that enables them to be used on all types of machines on the market.