Made of high-speed steel, wood and 3-inch curved metal blade for making precise cuts in wood with nails ideal for drywall and plaster materials. Applications include cutting holes in the ground for ventilation, repair of damaged floors and cutting holes for electrical boxes. The blade may be used for cutting metal materials such as copper, tin, aluminum, and nails are used. The semi-circular design makes the blade cut corners and angles of 90 degrees without disturbing cuts. The Versa-Tool System universal tree is compatible with the following brands. Fein Multimaster (all models including FMM250Q, 250, 315 and MSX all models with 3 / 8 inch round pins), with or Bosch Cordless Multi