These Mark wheel bike racks I don’t think have ever been used. They’re not all scratched up beat up or Ben at all. I have two of them. They’re both identical. They have a mounting bracket with them that would mount up to something like an inch and a half thick and 2 inches 2 1/4 wide I have a piece of expanded metal big enough for two bikes that I could fabricate a stinger onto it and it’s just the right size for two bikes whether they be E bikes or what ever if I set it up where you just push the stinger into your trailer hitch put a pin in it lock your bikes down I will want 200 for the whole works set up for two bikes