Tamiya - JR HG Aluminum Ball-Race Rollers
These lightweight yet tough 19mm aluminum rollers feature inbuilt 520 bearings to provide your machine with smooth movement. In addition, these rollers can be used for both front and rear roller setups.
19mm Aluminum Ball-Race Roller x2 Attachment screws also included. Compatible with all Mini 4WD and Mini 4WD PRO chassis machines.