Sure-Grip Park Brake Extension

I have been an aircraft maintenance technician for about 14 years, living with partial foot amputations on both feet so my wheelchair helps me get around the huge campus, shopping etc. These things are great! I have aN Invacare Prospin 4x and kit itself was a littlie disappointing at first because it doesn't come with the large bolt to mount them, well I turn the bolts we had upside down and it works fine, just not as pretty. Anyway I bought new invare 'headtubes" and mounted these by inverting the mentioned bolts and wow, these are awesome casters! I frequency run into things like extension cords, air hoses, etc, that would eventually bend the large bolts attaching the casters just enough to make the casters bind, I feel confident that the frog legs will prevent that bolt from bending as well as increasing comfort.