This extended length plastic mount allows you to take full advantage of all the data that your edge providesthe edge is out in front of you for easier heads up positioning and increased safetyfits 318 mm bars compatible most importantly with edge 1000 but also with edge 810 800 510 500 200 plus forerunner 310xt 910xt with the quick release kitweighs just 30gmade from impact resistant plastic please note for the mount to work with the forerunner 910xt or 310xt you must remove the scr