Inner Ring Bore Diameter 3/4 in Compatible Bearing Grainger Part Number 35TW77 35TX29 35TX65 35TZ23 779K38 779K90 779K91 779KG6 779KH2 Compatible Bearing Manufacturer Part Number 1610 16101 1612 16121 Outside Diameter 1 in Overall Width 0.765 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