The 1/8 NS2r rear skid mounts with four diff screws. Leading edge is beveled to avoid hang ups. The rear of the skid has an upkick past the end of the chassis to protect your hinge pin holders.
These skids are made of .093" nylon.
This listing comes with the following for HongNor X3 Sabre:
One TBR 1/8 NS2r rear skid