This Bi-Metal Flush Cut Blade is a 1-3/8-Inch wide blade for plunge cuts and flush cuts in nail-embedded wood, copper, aluminum, other nonferrous metals, mild steel, wood, plastic, drywall and other soft materials up to 1-9/16-Inch deep. It is constructed of Bi-Metal for superior durability and strength. The GAMT521 Bi-Metal Flush Cut Blade Universal Accessory fits almost All Oscillating Tools on the Market, most with NO Adaptor Needed and is an excellent accessory for our popular Genesis GMT15A, GMT16V and GMT25T Oscillating Tools.