Inner Ring Bore Diameter 1 1/8 in Compatible Bearing Grainger Part Number 35TX69 779K50 779KA0 Compatible Bearing Manufacturer Part Number 2216 22161 Outside Diameter 1.375 in Overall Width 1.015 in Ring Material Alloy Steel System of Measurement Inch Bore Diameter Tolerance +0/-0.0005 in Lubrication Openings None Outside Diameter Tolerance +0/-0.0005 in Ring Material Grade Su2