Spray buffing with Elky Pro Extender is a fast, easy and efficient method of maintaining high appearance levels, extending the time between strip and recoat jobs and restoring worn traffic lanes and entrances. It is also excellent for spot repairs of congested cubicles, medical offices, under desks and tables, between church pews and supermarket checkout lanes. Spray buffing is most effective when used with a conventional, low speed, floor machine. For high speed burnishing, use Elky Pro High Gloss Restorer. 1 gallon. Sold each.