Rear skid mounts with four diff screws. Leading edge is beveled to avoid hang ups.

Our skids are made of Acetal Brand name - Delrin and are very wear resistant. 
Note: Picture is of an RC8 skid. The Cobra skid will look similar. Pictures to follow.
 
This listing comes with the following for Serpent Cobra 811e:
  • One TBR Delrin Skid rear DSr