Metric hydraulic differential sleeve AB M16x1.5 10L GZ x M14x1.5 GW Waryński Hydraulic metric differential sleeve AB M16x1.5 10L GZ x M14x1.5 GW Waryński. The fasteners were designed and manufactured in accordance with applicable standards, which describe in detail the quality and dimensional requirements. They are compatible with fasteners from other renowned power hydraulics manufacturers.