An electric tool comprising: a holder configured to hold a tip tool thereon; a motor; a transmission mechanism configured to transmit torque of the motor to the holder; a torque detection unit configured to detect the torque transmitted from the motor to the holder; a clutch mechanism configured to be switchable from a transmitting state where the torque of the motor is transmitted to the holder to an interrupted state where no torque of the motor is transmitted to the holder, and vice versa; and a controller configured to, when a predetermined condition about the torque detected by the torque detection unit is satisfied, switch the clutch mechanism from the transmitting state to the interrupted state, wherein the clutch mechanism comprising: a plurality of first recesses provided for a first rotating part that rotates as the motor runs; a plurality of magnetic poles corresponding one to one to the plurality of first recesses, each of the plurality of magnetic poles being inserted into a corresponding one of the plurality of first recesses; a plurality of second recesses provided for a second rotating part coupled either directly or indirectly to the holder, the plurality of second recesses corresponding one to one to the plurality of first recesses, a pair of first and second recesses (713, 813) corresponding to each other facing each other while the clutch mechanism is in the transmitting state; and a plurality of permanent magnet blocks corresponding one to one to the plurality of second recesses, each permanent magnet block of the plurality of permanent magnet blocks including a permanent magnet, the permanent magnet of each permanent magnet block being inserted into a corresponding one of the plurality of second recesses; in each of the plurality of second recesses, an elastic member being interposed between a bottom of a corresponding one second recess of the plurality of second recesses and a corresponding one permanent magnet of the plurality of permanent magnet blocks. a holder configured to hold a tip tool thereon; a motor; a transmission mechanism configured to transmit torque of the motor to the holder; a torque detection unit configured to detect the torque transmitted from the motor to the holder; a clutch mechanism configured to be switchable from a transmitting state where the torque of the motor is transmitted to the holder to an interrupted state where no torque of the motor is transmitted to the holder, and vice versa; and a controller configured to, when a predetermined condition about the torque detected by the torque detection unit is satisfied, switch the clutch mechanism from the transmitting state to the interrupted state, wherein the clutch mechanism comprising: a plurality of first recesses provided for a first rotating part that rotates as the motor runs; a plurality of magnetic poles corresponding one to one to the plurality of first recesses, each of the plurality of magnetic poles being inserted into a corresponding one of the plurality of first recesses; a plurality of second recesses provided for a second rotating part coupled either directly or indirectly to the holder, the plurality of second recesses corresponding one to one to the plurality of first recesses, a pair of first and second recesses (713, 813) corresponding to each other facing each other while the clutch mechanism is in the transmitting state; and a plurality of permanent magnet blocks corresponding one to one to the plurality of second recesses, each permanent magnet block of the plurality of permanent magnet blocks including a permanent magnet, the permanent magnet of each permanent magnet block being inserted into a corresponding one of the plurality of second recesses; in each of the plurality of second recesses, an elastic member being interposed between a bottom of a corresponding one second recess of the plurality of second recesses and a corresponding one permanent magnet of the plurality of permanent magnet blocks. a plurality of first recesses provided for a first rotating part that rotates as the motor runs; a plurality of magnetic poles corresponding one to one to the plurality of first recesses, each of the plurality of magnetic poles being inserted into a corresponding one of the plurality of first recesses; a plurality of second recesses provided for a second rotating part coupled either directly or indirectly to the holder, the plurality of second recesses corresponding one to one to the plurality of first recesses, a pair of first and second recesses (713, 813) corresponding to each other facing each other while the clutch mechanism is in the transmitting state; and a plurality of permanent magnet blocks corresponding one to one to the plurality of second recesses, each permanent magnet block of the plurality of permanent magnet blocks including a permanent magnet, the permanent magnet of each permanent magnet block being inserted into a corresponding one of the plurality of second recesses; in each of the plurality of second recesses, an elastic member being interposed between a bottom of a corresponding one second recess of the plurality of second recesses and a corresponding one permanent magnet of the plurality of permanent magnet blocks.