After I've already bought two of these bicycle racks and this fit perfectly, I have ordered a third me. This did not fit perfectly. The GPSMAP could be attached only with violence and barely removed. Not very helpful for a short break if you want to disconnect the device. Amazon also took him back without complaint. Then I again ordered a. Unfortunately, this is not absolutely accurate. Also not to use. I'm still thinking whether I should help out with a file or return again.