VEVOR Angle Grinder, 4-1/2" Electric Grinder Power Tool, 8Amps 12000RPM High-Speed Corded Angle Grinders with 230° Adjustable Dust Guard for Metal Grinding, Cutting, Rust Removal (Disc Not Included)

The grinding wheel used has a 7/8 inch bore.

The shaft size is 5/8 inch If this answer does not resolve your current issue, please contact us again for assistance.