This is a set of four replacement Hot Bodies 17mm wheel nuts, and are intended for use with the Hot Bodies D8 and D8T 1/8 scale vehicles. These nuts are textured on the back side, allowing them to bite into the wheel, making it virtually impossible for a wheel nut to come loose.
These things are awesome. They are the best bang for the buck 1/8 wheel nuts I've found. They may not add to your bling factor, but the knurling grabs the wheel hard. If you lose a wheel while using these you are a magician. In my experience most of the cheaper wheel nuts you find do not have the knurling. These are the standard thread most 1/8 racing buggies use. They will fit Hot Bodies, Serpent, Associated, Kyosho, TLR, Losi, Tekno, Mugen, Agama, SWorks, and others.
If you want a simple, reliable, cheap wheel nut you won't go wrong with these.