Qstar-51GB Qstar-53GN Qstar-56GN Qstar-5AGF QSTF-1/2-12-B QSTF-1/4-1/4-U QSTF-1/4-10-B QSTF-1/4-3/8-U QSTF-1/4-6-B QSTF-1/4-8-B