Silverback 10mm Flanged Ball Bearing For MDRX AEG Airsoft Rifle (6pcs)

Silverback 10mm Flanged Ball Bearing For MDRX AEG Airsoft Rifle (6pcs) Steel Construction Airsoft Ball Bearing Outside diameter 10mm. Internal hole 4mm Height 4mm Suitable For Silverback MDRX Electric AEG Airsoft Rifle Include 6 Piece Bearing