NOT compatible with Drivesamrt 86, Dezl OTR800 OTR810 OTR1000 OTR1010, RV 890 1090, Overlander, aera 660 760. Not work for gps units that has a camera. Important Note: Mounting bracket cradle is not included. Only works for Garmin GPS units with 17mm swivel ball mounting pattern, not comaptible for 22mm or 25mm ball sockets. Compatible with Garmin Dezl 550 560 570 580 660 680 760 770 780 785 790(LM LMT LMT-S LMTHD), Drivesmart 50 51 60 61 70 71(LMT NA LMT-S LMTHD), Zumo 220 340 345 350 390 395 396 450 550 590 595 660 665 (LM LMT-S), Driveassist 50 51 60 61 (LMT LMT-S LMT-D LMTHD NA), Drive 40 50 51 52 55 60 61(LM LMT LMT-S), RV 660 760 770 (LMT LMT-S), DriveLuxe 50 51 61, StreetPilot Aera DriveRrack series GPS Navigator. for Garmin Nuvi 1100 1200 1250 1260 1300 1350 1370 1390 1450 1490 1690 (LM LMT T), 2200 2250 2300 2350 2360 2370 2450 2455 2457 2460 2475 2495 2497 2539 2555 2557 2558 2559 2577 2589 2595 2597 2598 2599 2639 2689 2699 (LM LMT LT), 3450 3490 3550 3590 3597 3750 3760 3790 5000 (LM LMT), 30 40 42 44 50 51 52 54 55 56 57 58 60 61 65 67 68 (LM LMT), 200 205 250 255 260 265 270 275 285 295 350 360 370 465 500 550 600 610 650 660 670 680 750 755 760 765 770 775 780 785 850 855 880 885 (W WT T LMT),etc. An alternative to gps cd slot mount holder, gps air vent mount holder, gps friction beanbag mount holder, gps suction cup mount, gps dashboard mount, gps windshield mount and gps dash pad. Tool-Free Installation: Expandable base fits most Car, SUV, trucks and other vehicles with standard size round cup holders. Sturdy 8-inch adjustable arm make your gps close to you for your perfect view and easy operation. Flexible ballhead joint construction allows you to adjust the gps in 360 degrees.