This is a simulated checker for the Tamiya official race 5-lane corner section, rolling rise, and rolling fall lane 1 and lane 5. ※ This product is a **defective item (as-is item)**. It has significant warping and noticeable layer lines, but we have determined that it can still be used for checking purposes. Please purchase only if you understand the condition. Returns and exchanges are not accepted. Material: PETG Dimensions: Approximately 18cm x Approximately 3.5cm x Approximately 7cm ※ This product is designed to resemble the actual item in shape and specifications for checking purposes, but it does not perfectly match the real thing. Due to being 3D printed, there may be layer lines, dimensional errors, and warping. #corner #mini4wd #checker #innermost #rollingrise #Tamiya #mini4wdGrandPrix2026 #jig #5lane #rollingfall