GTD lug is made of copper with 8um tin-plated and it has at least 99.9% purity.It is in accordance with DIN46267 and has markings for correct crimping.
GTY-1 and GTY-2 lug is made of copper with tin-plated and it has at least 99.9% purity.It is used to connect copper conductor joint.
ETC lug is made of brass with Nickel-plated.It doesn't need a hydraulic tool but a screwdriver to finish the installation.It is easy and quick.It has a viewing window to check the conductor location.