Superior Electric LN5811ML quick change grinder lock nut, enables the user to change a disc without any tools, using its built in thumb flange to lock the nut. The nut enables more surface on the work piece material. Compatible to all manufacturers 4 inch, 4-1/2 inch, 5 inch, 7 inch and 9 inch grinders with a standard 5/8-11 inch spindle thread.
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