Sandvik QA451Formerly known as: Extec S-7, QA450Sandvik QA441Formerly known as: Extec S-6, QA440Sandvik QA335Sandvik QE141Formerly known as: Extec Robotrac, QE140Sandvik QE241Sandvik QE342Sandvik QE442Formerly known as: Extec E8, QE440