2pcs/lot P004 KP004 bore 20mm plain bearings zinc alloy flange Auto self customize DIY center CNC ball bearing RoulementFeatures:-Two-screw housing with ball bearing insert for ready-to-install installation.-Screw locking flange for secure attachment to the guide shaft.-Between the inner bearing and the outer angle of the mounting ring can be fine-tuned-Easy to installSpecifications:8mm type:- Inner Diameter: 8mm-2 Fixing Hole Spacing: 37mm-Fixed Hole Diameter: 6.6mm10mm Type:-Inner Diameter: 10mm-2 Fixing Hole Spacing: 45mm-Fixed Hole Diameter: 7mm12mm Type:-Inner Diameter: 12mm-2 Fixing Hole Spacing: 55mm-Fixed Hole Diameter: 6.6mm20mm Type:-Inner Diameter: 20mm-2 Fixing Hole Spacing: 70mm-Fixed Hole Diameter: 10mmMaterial: Zinc AlloyPackage Included:2 pcs. Bore diameter: pillow block ball bearing (20mm)