These ball-race rollers commemorate Japan Cup 2016. The lightweight yet tough 19mm aluminum rollers have actually a black anodized finish and have pad printed Tamiya logo and Japan Cup 2016 lettering. They will have built-in 520 bearings to offer your device with smooth motion. They might be used as either front side or back rollers. 19mm Aluminum Ball-Race Roller x2 Attachment screws included. Compatible with all Mini 4WD and Mini 4WD PRO framework devices. Note: Some figures may require alterations for most readily useful fit.