Feature:1. Easy to install and use, with a full set of screws, which can be quickly installed or removed.2. Using high‑quality plastic injection molding, it has excellent load‑bearing capacity and durability.3. The original car hole installation, spring buffered, the head is stable, and the wheel base is wide, suitable for playing with a head up of 100m/32.8ft.4. The wheels are made of high‑quality materials, with high‑quality metal bearings on both sides to ensure smooth rotation.5. High precise design, exquisite workmanship, beautiful appearance, good impact resistance, improve the performance of the car.Specification:Item Type: RC Head‑Up WheelsMaterial: Metal + PlasticTire Distance: Approx. 150mm / 5.9 inProduct Weight: Approx. 435g / 15.3ozType: RC accessoriesCompatible: Fit for TRAXXAS X‑MAXX 6S / 8S 1/5 RC Monster trucks.How to Use:1. Remove the original head-up wheel and insert the head-up wheel into the rear bumper.2. First screw the two M4x25 screws above.3. Tighten the two M4x25 screws at the bottom.4. Simply tie a nylon cable tie.Package List:1 x Spring Head‑Up Wheel4 x Screw2 x Cable Ties1 x Manual Note:1. The winter is cold, especially in the north, the temperature is the enemy of the material, it is not recommended to play the speeding violently below 10℃. Flying high slope recommends removing the head‑up wheel before flying.2. Generally, 2 wheels are recommended for speeding, 4 wheels are needed if the head‑up wheel is not required for speeding, and it is not recommended to install any head‑up wheels for extreme speeding.3. Please allow 1‑3mm error due to manual measuremen