The center caps like that for the Sendel wheels are cheap plastic and the plastic clips that hold them on break easily. Also, they only go on one way.
BE SURE you purchase the correct one for the size of your wheel. Some are for 14", some for 15", and either 5 hole or 6 hole, etc.
There is/was one on ebay for around $50 ~ a rip off price. I had purchased 3 of them some 2 years ago for $24 each...to high at that for what you get.
Here they are even more expensive: http://www.centercapsdirect.com/2-pi...p_p_12097.html
2012 Fun Finder XT 276 Toy Hauler & Harley Davidson Ultra Classic with Condor wheel chock
2014 Dodge Ram 2500 AT 4X4 Crew Cab 6.4 L Hemi, 373 gears, tow package, Rambox option, Revolver X2 tonneau cover, Equal-I-zer anti-sway hitch.