Inner Ring, Bore Diameter 45 mm, Maximum Temperature 120 Degrees C, Minimum Temperature -30 Degrees C, Outside Diameter 50 mm, Overall Width 25 mm, Ring Material Alloy Steel, System of Measurement Metric, Bore Diameter Tolerance - 0.019 /- 0.005 mm, Lubrication Openings None, Ring Material Grade 52100. This item has been restricted from sale in the following state (s): []