Expansion: 1 ÷ 1,5 mm max
For correct use, position the piece to be processed at the centre of the expansion gripper, then slide it simultaneously along the central pin up to the first lock. To tighten, hold the piece to be processed in your hand then hit the end of the pin from the drive surface side. To reduce eccentricity to a minimum, clean the contact surface between the pin and the gripper and the centering holes. To release the piece, hit the pin from the opposite side.