Three are 3 straps on the closed end to hold it securely to the carrier same number in front, also not very user friendly. Yes you do need to use your own tools to tighten the nuts amd bolts (except the anti lock hitch pin which comes with an appropriate sized wrench). dessy twist dress And they last for an average of two years for me--wearing them almost every evening after work, and most all day on the weekends when Im not leaving the house. They can seriously KILL somebody. dessy twist dress I returned them last time and got the 5. dessy twist dress Its both a blessing and a curse. I have been through the carwash several times and now I have the snail on and its holding well. Parks website has a full description that includes stand models which will not work. dessy twist dress Its actually quite comfy and has helped with my chronic back pain too! Having used this tray several times, I cannot imagine working on a bike without it.
dessy twist dress