Needle Roller Bearing One Way Shell Type HF1216 HF1216 Needle Roller Bearing, this is a popular size that could be used in many application that uses this size 12mm x 18mm x 16mm. * Item: HF1216 Roller Bearing * Type: Needle Roller Bearing * Dimensions: 12mm x 18mm x 16mm/Metric * ID (inner diameter)/Bore: 12mm * OD (outer diameter): 18mm * Width/Height/thickness: 16mm * Size: 12 x 18 x 16 mm * Quantity: One Bearing