Cup flange bearing with side bearing ball bearing four-wheel drive bearing diy accessories material cup 4mm bearing
Inner diameter 4mm, outer diameter 8mm, belt edge 9mm, thickness 3mm
With edge bearing, it is easier to fix to the bearing hole. If the bearing without the edge is used, after installing it to the bearing hole, it needs to be fixed left and right to avoid slipping out of the bearing hole;
With the side bearing, because there is an edge on one side, there is no need to worry about slipping out. If the wheel is installed, the wheel itself will also play around the card position, so there is no need to worry about slipping out.
Shipping list: 1 pcs


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