THE PERFECT SANDING TOOL! A Favorite Among The Professionals When Blocking All Surfaces. Welcome to the Dura-Block Line! HIGH END PROFESSIONAL SANDING BLOCKS FOR SHOW CARS AND PERFECT FLAT FINISHES (THE BEST SANDING BLOCK MONEY CAN BUY). The Dura-Block and Dura-Scrub enhance any project you're working on. Dura-Block and Dura-Scrub are the ideal solution for Classic Car Custom Restoration, Boats, Planes, Trucks and anything project you're working on. Kit Includes: