5 pack of World Champion ACER Racing 5x11x4mm Ball Bearings with dual teflon seals.  5x11mm ball bearings also known as size MR115 ball bearings and TAMIYA 1150 bearing part 53008. HSR cage technology and sealed on both sides.  Super fast and super smooth action. Price is for FIVE 5x11x4mm ball bearings as shown in the photo.

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