This product is a brushless micromotor, so it is no need to replace the carbon brush which is longer life, durable and safe.The use range has been expanded gradually for jewelry, nail, engraving, orthopedics,industry market, beauty wood carving,egg carving etc.With hand speed control and foot pedal speed control, more convenivent. Rotate speed 0-50000 RPM Chuck size 2.35mm Electric current 0-650mh Voltage 110V/60Hz±10%(50-60Hz) Package Size 40*26*10cm Weight 3KG Foot Pedal Use foot pedal control, operation is more convenient. Brushless Double Lock Handle XM Gray Mini size and lightweight, convenient to carry and simple to operate.This Handle is a micro motor handle, which is an instrument made with motor and used for working up to 50000rpm. Burs size: 2.35 mm RPM: Max 50000rpm Torque: 8NCm Weight: 301g Please cut off the power supply when change the bur, hold the No. 1 part in your left hand,rotate right with the No. 2 knurling top ring in your right hand. When you hear the sound of "ticking' ,you can pull out the chuck and change bur. After changing the bur, you can use the original method of reverse locking bur. After locking,you can try to pull out the bur by hand and you can use if it is without loosening. Precautions to be viewed when the handle is not working properly Brushless YCA500 Brushless G800 Brush N3+H37LN Brush N3+H37L1 Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 3.8 out of 5 stars 16 3.8 out of 5 stars 27 3.3 out of 5 stars 6 3.8 out of 5 stars 11 Price $209.99$209.99 $212.99$212.99 $115.99$115.99 $85.99$85.99 Burs size 2.35mm 2.35mm 2.35mm 2.35mm Rotate speed 0-50000rpm 0-50000rpm 0-45000rpm 0-35000rpm Torque 8NCm 8NCm 280gf.cm 280gf.cm Type Brushless Brushless Brush Brush Foot pedal control ✓ ✓ ✓ ✓