A balanced cartridge has a more stable and longer service life. The torque head has more strength, and the grinding force is stronger. The noise level is lower than 60dB, making it quieter. Patented push button, with the use of the handpiece, the bur is tighter, no flying bur. Triple water spray, Perfect atomization, and efficient cooling. Specifications: - Rotation speed :300,000-350,000r/min. - Triple spray. - Noise:≤60dB. - Head size:12.5 mm. - Head height:13.3 mm. - Chuck type: Push button. - Warranty: 6 Months.