4 Ny-Loc Wheel Nuts. A nylon insert to lock the Wheels in place on the Axles, when fully tightened up.
LiteHawk OVERDRIVE 4X4 MT Wheel Removal:
Your OVERDRIVE comes with a 7mm metal wheel wrench to remove the steel Ny-Loc Wheel Nuts. The Nuts are made with a nylon inset that locks the wheel to Axle.
When removing the wheel, be aware that there is a Wheel Hex nut holding an Axle pin in place, just underneath. Be careful that you don't lose the pin.