Align Helis 450 PRO U/grade-d/train-rotor Ceramic Upgrade Bearing Conveyor Roller Bearing ✔️ 12mm ID - 42mm

✔️ 12mm ID - 42mm OD - 10mm Groove Diameter

VB050CP0 is ABEC 1 quality

8 241 70 184 20 25 22 138 76 25

inner diameter is 1/8" inch

Ball Bearings Kit for E-flite Helis Blade 400 3D

Align Helis 450 PRO U/grade-d/train-rotor Ceramic Upgrade Bearing Conveyor Roller Bearing ✔️ 12mm ID - 42mmBall Bearings for Align Helis 450 PRO U grade d train rotor Ceramic Upgrade Closures: Rubber Sealed Closure Side: Double Sided Seals Lubrication: Low Friction Grease Material: Corrosion Resistant Chrome Steel Balls: High Chromium Steel 52100 SAE Steel Balls Cage: Low Friction Steel Precision: ABEC 1 Quality Brand: VXB Quantity: Set of 11 Bearings