. Specification:Product Name: Pillow Case Bearing: KFL001Color: SilverMaterial:Zinc AlloyOverall Dimension: 63 38 16 / 2.5 1.5 0.63 ( * B * )Bearing Inner Diameter:12 / 0.47 Installation Diameter: 7 0.2 8 Mounting hole spacing: 1.9 / 48 Package contents:4 pillow blocks Only mentioned package content, other products are not included.Note: Due to light radiation monitors, the colour tone in the photos as well as the actual product may be slightly different. Allowed measurement errors +/- 1.