This specially made felt is made of matted, compressed animal fibers mixed with vegetable or synthetic fibers, and yields rubbing results that are far superior what you’d get with cloth or sheepskin. It is best used with rubbing compounds, pumice and rottenstone to rub out and adjust the sheen of gloss finishes. Its can also be used with Wool-Lube to level burn-ins. You can apply the rubbing compound directly to the felt block (which you can’t with a cork block which is only a backing). 2" x 4"x 1".