The perfect tool for white mortar to ensure a non-marred surface. Use this tool to make round, sunken, moisture-resistant rodded joints. This concave joint is the most popular masonry joint in the United States. Made from plexiglass and will not discolor or leave black marks on material. The shape of the tool provides knuckle clearance as you form joints. A popular tool used with glass blocks. The overall length of the tool is 11-1/4″ long.

• Creates a concave joint
• Creates the most popular joint in the U.S.
• Strong plexiglass construction
• Will not discolor, mar, or burnish the surface
• Creates a moisture-resistant rodded
• Designed for knuckle clearance
• Popular with glass blocks and white mortar
• Overall length 11-1/4 In.