Saitech .045 - Stainless Steel. So unique it has a patent. Thin .045 width. Wheel can be mounted to angle grinders with standard Type 27 flanges. Fast cutting with long life. Stainless steel, high tensile alloys. Ferrous metals (iron, steel, welds, etc.). Specifications: Max RPM - 12200. Tech Info: Manufactured with patented 3M Cubitron grain to outlast standard aluminum oxide wheels. Thin cutting wheel in a Type 27 shape makes this perfect for your angle grinder. Unique bonding system lets you make faster burr-free cuts. Designed to provide very long life for fewer wheel changes and less downtime. All sizes externally reinforced with the highest quality fiberglass for maximum safety and performance.