Imperial blades - iboa330-3 - made in the U.S.A. Universal fit 1-1/4 in. Universal bi-metal blade 3-pk. Features our one fit system allowing our blades to fit 98% of multi-tools/oscillating tools on the market. This bi-metal blade has 18 teeth per inch. Cut anything from wood to decking screws including PVC. New arbor fits almost any oscillator on the market.