Marshalltown 840 – 6" x 3" x 1" 20-Grit Rub Brick

The Marshalltown 840 Rub Brick is a versatile masonry tool for smoothing concrete surfaces and cleaning brick. Made from fluted silicon carbide stone, this 20-grit brick delivers aggressive material removal for professional finishing.

• Constructed from durable silicon carbide stone
• Size: 6" x 3" x 1" with 20-grit abrasive
• Ideal for dressing down concrete and smoothing tile
• Removes form marks and high spots efficiently
• Comfortable handle for secure grip during use