The imperial blade 4 inch high speed steel circular saw blade has 12 teeth per in inch, is 4 inches in diameter, and has a plunge depth of 1-1/2 inches. This blade is made of high-speed steel material that is rigid allowing the blade to cut through harder wood and sheet metal up to 1 millimeter thick as well as carbon fiber, fiberglass, and nails. This blade is ideal for long rip cuts. The arbor on this blade is universal and compatible with Fein Multimaster Tools, Dremel Multi-Max Tools, Bosch Multi-X Tools, Chicago Multi-Tool, Craftsman Multi Tool, Harbor Freight Multi-Tool, Milwaukee Tool, Ridged Multi-Tool, and Craftsman Multi-Tool.