Grinder arbor adapter size looks wrong
Hi fellow grinders.
I have an old Mastercraft 4inch grinder 4 amps. When I put 4 1/2 cut off wheel with a 7/8 hole, I see a 2 mm gap between the disk and arbor nut / shim, in yellow

Something tells me using the cutoff wheel like this in not safe, is there an adapter I can get ?

I have an old Mastercraft 4inch grinder 4 amps. When I put 4 1/2 cut off wheel with a 7/8 hole, I see a 2 mm gap between the disk and arbor nut / shim, in yellow

Something tells me using the cutoff wheel like this in not safe, is there an adapter I can get ?
