Imperial blades - iboat410-5 - made in the U.S.A. Universal fit 3-1/8 in. Segment HSS saw blade tin storm blade 5-pk. Features our one fit system allowing our blades to fit 98% of multi-tools/oscillating tools on the market. Use this HSS - high speed steel blade for fiberglass, carbon fiber, 20 gauge sheet metal and harder woods. The titanium coating will make this blade last longer and cut cooler.