• Best For: Masonry workers cutting hard brick with a compact tool that takes 4-inch blades.
• Highlight: The smallest MK-414PB hard-brick size: 4 inches, .080-inch width, 7/8-inch to 5/8-inch arbor.
• Expert Note: 159814 has a 7/8-inch to 5/8-inch arbor, while the 7-inch 159815 uses a DM-5/8 arbor, so the two are not interchangeable on one tool.