QGS 20 BM-3 QGS 20 BMD-3 QGS 20 TM-3 QGS 20 TMD-3 QGS 2000 HOUR SVC KIT - 75-100 QGS 2000 HR MAINT. KIT - 40-60 QGS 20S BM-3 QGS 20S TMD-3 QGS 20S-TM-3 QGS 25 BM-3