Rated 4 out of 5 stars.
Need to attach a bore polisher to your grinder?

This Merit mandrel is the simple adapter you need.
It has a 1/4-inch diameter shank that fits right into your grinder's chuck.

The other end has a 1/2\-20 male thread that screws into your bore polisher wheel.

It's all one solid piece of steel, so it's tough and lasts a long time.
The knurled section in the middle gives you a good grip when you're tightening or loosening it.

Makes polishing cylinders, pipes, or any internal surface way easier.

If you do deburring or finishing work, this little tool is a must-have.

Just match the threads and you're good to go.
