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ARRMA #AR610018 Bearings-15x21x4mm 1 pair
This is a pair of 15x21x4mm Ball Bearings from Arrma.
Features:
Super-smooth ball-races for fast and consistent operation
May also be used in any application requiring this size of ball bearing
Includes:
(2)15x21x4mm Ball Bearings
Specs:
Inner Diameter: 15mm
Outer Diameter: 21mm
Thickness: 4mm