![MINI ROUND HOLE BALL BEARING SET 4P - Shiroiokami HobbyTech](http://shobbytech.com/cdn/shop/products/mini-round-hole-ball-bearing-set-4p-217875_{width}x.jpg?v=1666671927)
60MM BLACK REINFORCEMENT SHAFT
These ball bearings give smooth counter gear rotation for greater efficiency. They feature 2mm holes. Compatible with Mini 4WD car high speed (4.2:1, 4:1), high speed EX (3.7:1) and super speed (3.5:1) gear set counter gears. Cannot be used with Mini 4WD PRO cars.