These are the Scale Look Diamond Cut M5 Red Serrated Flange Wheel Nuts from Hot Racing.

Aluminum construction
Anodized black in color
For use with Most 1/10 wheels, any chassis vehicles with M5 Wheel Nut.

Four Scale Look DC Wheel Nut M5 Red Serrated Flange Nuts

Installation on vehicle
NO special wrenches are need.
8mm wheel m5 wheel nut wrench

Also available in:
Green (LN5X05)
Orange (LN5X03)
Purple (LN5X07)
Red (LN5X02)
Black (LN5X01)
Blue (LN5X06)