This replacement blade fits the on the Hubbard Sled Runner (BL286). The 3/4″ polished steel jointer blade makes smooth grooves every time. Strong case-hardened steel blade for toughness. Wear is distributed during use by simply revolving the blade. Use to create concave masonry joints. This joint creates a tight seal in the mortar to resist water penetration, the most popular joint in the United States. Designed by a bricklayer with 60 years experience.








