Girder: Material (nylon + fiber) Characteristics: high toughness, high strength, surface. Engraving machine high speed processing Wheel: bearing + polyurethane integrated, more wear-resistant, more stable. On both sides of the unloading rod: added a 2mm thickness of 6061 aluminum alloy material for unloading, better prolong the life, the car is not, he is still there Assembly : Increase the hole with 2.5 screws directly through, on the nut, more convenient, more efficient Suitable for: H16 16207 16208 16209 16210 1/16 RC Car Colour:red Material:composite material Package Contents: 1 x RC Car Roll Cage 1 x RC Car Mounting Accessories Set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.