buen amortigudor cuando aterrrizas muty fuerte indispenzableThese are great, I added them to my Quanum venture extended skids and they gave me some extra clearance for my gimbal as well as made the stance more stable.These are interesting bumpers. Good for mounting FC boards if they are cut in half and used on the screw's to sandwich the FC. Also useful for sorting landings on MR skids.These are great little skid collars. I mistakenly bought the larger yellow ones, but they were too big for 10mm tubes. These are perfect sized, and since they are smaller, theres less drag. Awesome, I wished I had bought these the first time.