【Extremely high concentricity】This grinding pen is equipped with a precision bearing and an extended rotating shaft, achieving impeccable concentricity. The copper collet ensures a firm grip, and the drill bit is fastened by screws, ensuring that the grinding head will not loosen during use, helping you to complete the work precisely and exquisitely.
【Born for maintenance】The spherical cutter alloy grinding heads with diameters of 0.3mm, 0.4mm, and 0.5mm can be used to grind chips and circuit boards. The D-shaped grinding needle heads with diameters of 0.2mm and 0.5mm can be used to grind circuit boards and solder joint. The cutting heads with diameters of 0.8mm and 1.5mm can be used to slot small screws and cut shielding covers. We also give you 3.3mm spherical emery grinding head, 1.3mm oval grinding head, 6mm trapezoidal grinding head.The 2mm and 6mm blade can be used as a screw driver cooperating with the cutting head to remove damaged small screws
【Three speeds can be adjusted】This grinding pen is equipped with a three-speed rotation adjustment function, with the rotation speed ranging from 5000 to 25000 revolutions per minute to adapt to different usage scenarios. The lowest rotation speed allows you to safely grind your nails. Whether it is grinding a high-precision circuit board or rough wood, you can handle it with ease.
【Quiet operation and easy to hold】 This compact and portable grinding pen has a low noise level during operation, ensuring that it will not interfere with your other work. It is lightweight but has no less power. It is convenient and flexible to hold in the hand, making you more handy when repairing precision instruments.
【Convenient charging】This engraving machine is equipped with a 5V rechargeable battery, which can be used continuously for up to 60 minutes after being fully charged. It should be a part of your toolbox.