Check the listing for details. NK20/20 Needle Roller Bearings 20mm x 28mm x 20mm Chrome Steel Open End 2pcs. Condition: New. Listed at 15.16 USD. Specification:Model: NK20/20Drawn Cup Material: SteelCage Material: SteelNeedle Roller Material: Chromium Steel (GCr15)Accuracy: P0Bore Diameter (Fw): 20mmOutside Diameter (D): 28mmWidth: 20mmLimit Speed: 21100RPMDynamic Load Rating: 18600NStatic Load Rating: 23800NConstruction : Single RowNumber of Pack: 2 Pcs Description:-They are compact bearings with high load carrying capacity and stiffness.-Suitable for high dynamic loads or radial-limited installation. They are mounted in housings with a tight interference fit.-Used in a variety of applications such as agricultural and construction equipment, pumps and compressors, and two-stroke engines.Note: Use a press or special tool (not a hammer) for installation, as run out may cause local deformation or brittle breakage.