Item: MR74 Ball Bearing Type: Full Ceramic Ball Bearing Cage: PTFE Balls: ZrO2 zirconium oxide ceramic Inner/outer races: ZrO2 (zirconium oxide) Ceramic Dimensions: 4mm x 7mm x 2mm/Metric ID (inner diameter)/Bore: 4mm OD (outer diameter): 7mm Width/Height/thickness: 2mm Size: 4X7X2 mm Quantity: One Bearing
