BHA 1" x 1" x 1/4" Shank Mounted Flap Wheels, 60 Grit Aluminum Oxide - 5 Pack

Will this work with any battery operated hand drill?

What is the overall length of this product? I am looking for the flap part to be 1" but overall length is about 2-1/2".

Do you have finer grit? Should I lubricate them when polishing the inside a 1.25" brass tube.

How well do they work contouring wood?